diff --git a/packages/amazonq/.changes/next-release/Removal-aa696d15-306f-4af5-aa4b-ab48c44f0a5e.json b/packages/amazonq/.changes/next-release/Removal-aa696d15-306f-4af5-aa4b-ab48c44f0a5e.json
new file mode 100644
index 00000000000..720817d707a
--- /dev/null
+++ b/packages/amazonq/.changes/next-release/Removal-aa696d15-306f-4af5-aa4b-ab48c44f0a5e.json
@@ -0,0 +1,4 @@
+{
+	"type": "Removal",
+	"description": "Settings: No longer migrate old CodeWhisperer settings or initialize telemetry setting from AWS Toolkit."
+}
diff --git a/packages/core/src/amazonq/explorer/amazonQTreeNode.ts b/packages/core/src/amazonq/explorer/amazonQTreeNode.ts
index 4ea7970e84b..bbfd1bc1ff2 100644
--- a/packages/core/src/amazonq/explorer/amazonQTreeNode.ts
+++ b/packages/core/src/amazonq/explorer/amazonQTreeNode.ts
@@ -5,7 +5,7 @@
 
 import * as vscode from 'vscode'
 import { ResourceTreeDataProvider, TreeNode } from '../../shared/treeview/resourceTreeDataProvider'
-import { AuthState, isPreviousQUser } from '../../codewhisperer/util/authUtil'
+import { AuthState } from '../../codewhisperer/util/authUtil'
 import { createLearnMoreNode, createInstallQNode, createDismissNode } from './amazonQChildrenNodes'
 import { Commands } from '../../shared/vscode/commands2'
 
@@ -40,10 +40,7 @@ export class AmazonQNode implements TreeNode {
     }
 
     public getChildren() {
-        const children = [createInstallQNode(), createLearnMoreNode()]
-        if (!isPreviousQUser()) {
-            children.push(createDismissNode())
-        }
+        const children = [createInstallQNode(), createLearnMoreNode(), createDismissNode()]
         return children
     }
 
diff --git a/packages/core/src/auth/auth.ts b/packages/core/src/auth/auth.ts
index 3335f8ab333..5203735e05a 100644
--- a/packages/core/src/auth/auth.ts
+++ b/packages/core/src/auth/auth.ts
@@ -339,11 +339,6 @@ export class Auth implements AuthService, ConnectionManager {
             metadata: { connectionState: 'unauthenticated' },
         })
 
-        // Remove the split session logout prompt, if it exists.
-        if (!isAmazonQ()) {
-            await globals.globalState.update('aws.toolkit.separationPromptDismissed', true)
-        }
-
         try {
             ;(await tokenProvider.getToken()) ?? (await tokenProvider.createToken())
             const storedProfile = await this.store.addProfile(id, profile)
@@ -1136,71 +1131,3 @@ export function hasVendedIamCredentials(isC9?: boolean, isSM?: boolean) {
     isSM ??= isSageMaker()
     return isSM || isC9
 }
-
-type LoginCommand = 'aws.toolkit.auth.manageConnections' | 'aws.codecatalyst.manageConnections'
-/**
- * Temporary class that handles notifiting users who were logged out as part of
- * splitting auth sessions between extensions.
- *
- * TODO: Remove after some time.
- */
-export class SessionSeparationPrompt {
-    // Local variable handles per session displays, e.g. we forgot a CodeCatalyst connection AND
-    // an Explorer only connection. We only want to display once in this case.
-    // However, we don't want to set this at the global state level until a user interacts with the
-    // notification in case they miss it the first time.
-    #separationPromptDisplayed = false
-
-    /**
-     * Open a prompt for that last used command name (or do nothing if no command name has ever been passed),
-     * which is useful to redisplay the prompt after reloads in case a user misses it.
-     */
-    public async showAnyPreviousPrompt() {
-        const cmd = globals.globalState.tryGet('aws.toolkit.separationPromptCommand', String)
-        return cmd ? await this.showForCommand(cmd as LoginCommand) : undefined
-    }
-
-    /**
-     * Displays a sign in prompt to the user if they have been logged out of the Toolkit as part of
-     * separating auth sessions between extensions. It will executed the passed command for sign in,
-     * (e.g. codecatalyst sign in vs explorer)
-     */
-    public async showForCommand(cmd: LoginCommand) {
-        if (
-            this.#separationPromptDisplayed ||
-            globals.globalState.get<boolean>('aws.toolkit.separationPromptDismissed')
-        ) {
-            return
-        }
-
-        await globals.globalState.update('aws.toolkit.separationPromptCommand', cmd)
-
-        await telemetry.toolkit_showNotification.run(async () => {
-            telemetry.record({ id: 'sessionSeparation' })
-            this.#separationPromptDisplayed = true
-            void vscode.window
-                .showWarningMessage(
-                    'Amazon Q and AWS Toolkit no longer share connections. Please sign in again to use AWS Toolkit.',
-                    'Sign In'
-                )
-                .then(async (resp) => {
-                    await telemetry.toolkit_invokeAction.run(async () => {
-                        telemetry.record({ source: 'sessionSeparationNotification' })
-                        if (resp === 'Sign In') {
-                            telemetry.record({ action: 'signIn' })
-                            await vscode.commands.executeCommand(cmd)
-                        } else {
-                            telemetry.record({ action: 'dismiss' })
-                        }
-
-                        await globals.globalState.update('aws.toolkit.separationPromptDismissed', true)
-                    })
-                })
-        })
-    }
-
-    static #instance: SessionSeparationPrompt
-    public static get instance() {
-        return (this.#instance ??= new SessionSeparationPrompt())
-    }
-}
diff --git a/packages/core/src/codecatalyst/activation.ts b/packages/core/src/codecatalyst/activation.ts
index 4a2385559f4..3e47dd53879 100644
--- a/packages/core/src/codecatalyst/activation.ts
+++ b/packages/core/src/codecatalyst/activation.ts
@@ -26,7 +26,6 @@ import { DevEnvActivityStarter } from './devEnv'
 import { learnMoreCommand, onboardCommand, reauth } from './explorer'
 import { isInDevEnv } from '../shared/vscode/env'
 import { hasScopes, scopesCodeWhispererCore, getTelemetryMetadataForConn } from '../auth/connection'
-import { SessionSeparationPrompt } from '../auth/auth'
 import { telemetry } from '../shared/telemetry/telemetry'
 import { asStringifiedStack } from '../shared/telemetry/spans'
 
@@ -64,7 +63,6 @@ export async function activate(ctx: ExtContext): Promise<void> {
                     })
 
                     await authProvider.secondaryAuth.forgetConnection()
-                    await SessionSeparationPrompt.instance.showForCommand('aws.codecatalyst.manageConnections')
                 })
             },
             { emit: false, functionId: { name: 'activate', class: 'CodeCatalyst' } }
diff --git a/packages/core/src/codewhisperer/activation.ts b/packages/core/src/codewhisperer/activation.ts
index 474d8d68121..4ea655fc4da 100644
--- a/packages/core/src/codewhisperer/activation.ts
+++ b/packages/core/src/codewhisperer/activation.ts
@@ -106,9 +106,6 @@ export async function activate(context: ExtContext): Promise<void> {
     localize = nls.loadMessageBundle()
     const codewhispererSettings = CodeWhispererSettings.instance
 
-    // Import old CodeWhisperer settings into Amazon Q
-    await CodeWhispererSettings.instance.importSettings()
-
     // initialize AuthUtil earlier to make sure it can listen to connection change events.
     const auth = AuthUtil.instance
     auth.initCodeWhispererHooks()
diff --git a/packages/core/src/codewhisperer/util/authUtil.ts b/packages/core/src/codewhisperer/util/authUtil.ts
index 53c33c2ed4e..461f262d34d 100644
--- a/packages/core/src/codewhisperer/util/authUtil.ts
+++ b/packages/core/src/codewhisperer/util/authUtil.ts
@@ -501,30 +501,6 @@ export class AuthUtil {
     }
 }
 
-/**
- * Returns true if an SSO connection with AmazonQ and CodeWhisperer scopes are found,
- * even if the connection is expired.
- *
- * Note: This function will become irrelevant if/when the Amazon Q view tree is removed
- * from the toolkit.
- */
-export function isPreviousQUser() {
-    const auth = AuthUtil.instance
-
-    if (!auth.isConnected() || !isSsoConnection(auth.conn)) {
-        return false
-    }
-    const missingScopes =
-        (auth.isEnterpriseSsoInUse() && !hasScopes(auth.conn, amazonQScopes)) ||
-        !hasScopes(auth.conn, codeWhispererChatScopes)
-
-    if (missingScopes) {
-        return false
-    }
-
-    return true
-}
-
 export type FeatureAuthState = { [feature in Feature]: AuthState }
 export type Feature = (typeof Features)[keyof typeof Features]
 export type AuthState = (typeof AuthStates)[keyof typeof AuthStates]
diff --git a/packages/core/src/codewhisperer/util/codewhispererSettings.ts b/packages/core/src/codewhisperer/util/codewhispererSettings.ts
index 32ae9cd0307..2bf2f657867 100644
--- a/packages/core/src/codewhisperer/util/codewhispererSettings.ts
+++ b/packages/core/src/codewhisperer/util/codewhispererSettings.ts
@@ -2,7 +2,7 @@
  * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
  * SPDX-License-Identifier: Apache-2.0
  */
-import { fromExtensionManifest, migrateSetting } from '../../shared/settings'
+import { fromExtensionManifest } from '../../shared/settings'
 import { ArrayConstructor } from '../../shared/utilities/typeConstructors'
 
 const description = {
@@ -17,22 +17,6 @@ const description = {
 }
 
 export class CodeWhispererSettings extends fromExtensionManifest('amazonQ', description) {
-    // TODO: Remove after a few releases
-    public async importSettings() {
-        await migrateSetting(
-            { key: 'aws.codeWhisperer.includeSuggestionsWithCodeReferences', type: Boolean },
-            { key: 'amazonQ.showInlineCodeSuggestionsWithCodeReferences' }
-        )
-        await migrateSetting(
-            { key: 'aws.codeWhisperer.importRecommendation', type: Boolean },
-            { key: 'amazonQ.importRecommendationForInlineCodeSuggestions' }
-        )
-        await migrateSetting(
-            { key: 'aws.codeWhisperer.shareCodeWhispererContentWithAWS', type: Boolean },
-            { key: 'amazonQ.shareContentWithAWS' }
-        )
-    }
-
     public isSuggestionsWithCodeReferencesEnabled(): boolean {
         return this.get(`showInlineCodeSuggestionsWithCodeReferences`, false)
     }
diff --git a/packages/core/src/extensionNode.ts b/packages/core/src/extensionNode.ts
index 480e409f5d8..0c53cc89975 100644
--- a/packages/core/src/extensionNode.ts
+++ b/packages/core/src/extensionNode.ts
@@ -46,12 +46,12 @@ import globals from './shared/extensionGlobals'
 import { Experiments, Settings, showSettingsFailedMsg } from './shared/settings'
 import { isReleaseVersion } from './shared/vscode/env'
 import { AuthStatus, AuthUserState, telemetry } from './shared/telemetry/telemetry'
-import { Auth, SessionSeparationPrompt } from './auth/auth'
+import { Auth } from './auth/auth'
 import { getTelemetryMetadataForConn } from './auth/connection'
 import { registerSubmitFeedback } from './feedback/vue/submitFeedback'
 import { activateCommon, deactivateCommon } from './extension'
 import { learnMoreAmazonQCommand, qExtensionPageCommand, dismissQTree } from './amazonq/explorer/amazonQChildrenNodes'
-import { AuthUtil, codeWhispererCoreScopes, isPreviousQUser } from './codewhisperer/util/authUtil'
+import { codeWhispererCoreScopes } from './codewhisperer/util/authUtil'
 import { installAmazonQExtension } from './codewhisperer/commands/basicCommands'
 import { isExtensionInstalled, VSCODE_EXTENSION_ID } from './shared/utilities'
 import { ExtensionUse, getAuthFormIdsFromConnection, initializeCredentialsProviderManager } from './auth/utils'
@@ -139,16 +139,8 @@ export async function activate(context: vscode.ExtensionContext) {
                             conn.scopes
                         )
                         await Auth.instance.forgetConnection(conn)
-                        await SessionSeparationPrompt.instance.showForCommand('aws.toolkit.auth.manageConnections')
                     }
                 }
-
-                // Display last prompt if connections were forgotten in prior sessions
-                // but the user did not interact or sign in again. Useful in case the user misses it the first time.
-                await SessionSeparationPrompt.instance.showAnyPreviousPrompt()
-
-                // MUST restore CW/Q auth so that we can see if this user is already a Q user.
-                await AuthUtil.instance.restore()
             },
             { emit: false, functionId: { name: 'activate', class: 'ExtensionNodeCore' } }
         )
@@ -272,52 +264,47 @@ export async function deactivate() {
 
 async function handleAmazonQInstall() {
     const dismissedInstall = globals.globalState.get<boolean>('aws.toolkit.amazonqInstall.dismissed')
-    if (isExtensionInstalled(VSCODE_EXTENSION_ID.amazonq) || dismissedInstall) {
+    if (dismissedInstall) {
+        return
+    }
+
+    if (isExtensionInstalled(VSCODE_EXTENSION_ID.amazonq)) {
+        await globals.globalState.update('aws.toolkit.amazonqInstall.dismissed', true)
         return
     }
 
     await telemetry.toolkit_showNotification.run(async () => {
-        if (isPreviousQUser()) {
-            await installAmazonQExtension.execute()
-            telemetry.record({ id: 'amazonQStandaloneInstalled' })
-            void vscode.window.showInformationMessage(
-                "Amazon Q is now its own extension.\n\nWe've auto-installed it for you with all the same features and settings from CodeWhisperer and Amazon Q chat."
+        telemetry.record({ id: 'amazonQStandaloneChange' })
+        void vscode.window
+            .showInformationMessage(
+                'Try Amazon Q, a generative AI assistant, with chat and code suggestions.',
+                'Install',
+                'Learn More'
             )
-            await globals.globalState.update('aws.toolkit.amazonqInstall.dismissed', true)
-        } else {
-            telemetry.record({ id: 'amazonQStandaloneChange' })
-            void vscode.window
-                .showInformationMessage(
-                    'Amazon Q has moved to its own extension.' +
-                        '\nInstall it to use Amazon Q, a generative AI assistant, with chat and code suggestions.',
-                    'Install',
-                    'Learn More'
-                )
-                .then(async (resp) => {
-                    await telemetry.toolkit_invokeAction.run(async () => {
-                        telemetry.record({
-                            source: ExtensionUse.instance.isFirstUse()
-                                ? ExtStartUpSources.firstStartUp
-                                : ExtStartUpSources.none,
-                        })
-
-                        if (resp === 'Learn More') {
-                            // Clicking learn more will open the q extension page
-                            telemetry.record({ action: 'learnMore' })
-                            await qExtensionPageCommand.execute()
-                            return
-                        }
-
-                        if (resp === 'Install') {
-                            telemetry.record({ action: 'installAmazonQ' })
-                            await installAmazonQExtension.execute()
-                        } else {
-                            telemetry.record({ action: 'dismissQNotification' })
-                        }
-                        await globals.globalState.update('aws.toolkit.amazonqInstall.dismissed', true)
+            .then(async (resp) => {
+                await telemetry.toolkit_invokeAction.run(async () => {
+                    telemetry.record({
+                        source: ExtensionUse.instance.isFirstUse()
+                            ? ExtStartUpSources.firstStartUp
+                            : ExtStartUpSources.none,
                     })
+
+                    if (resp === 'Learn More') {
+                        // Clicking learn more will open the q extension page
+                        telemetry.record({ action: 'learnMore' })
+                        await qExtensionPageCommand.execute()
+                        return
+                    }
+
+                    if (resp === 'Install') {
+                        telemetry.record({ action: 'installAmazonQ' })
+                        await installAmazonQExtension.execute()
+                    } else {
+                        telemetry.record({ action: 'dismissQNotification' })
+                    }
+                    await globals.globalState.update('aws.toolkit.amazonqInstall.dismissed', true)
                 })
-        }
+            })
     })
 }
 
diff --git a/packages/core/src/shared/globalState.ts b/packages/core/src/shared/globalState.ts
index 5cce9ff6f84..5662c3e608e 100644
--- a/packages/core/src/shared/globalState.ts
+++ b/packages/core/src/shared/globalState.ts
@@ -44,8 +44,6 @@ export type globalKey =
     | 'aws.toolkit.amazonq.dismissed'
     | 'aws.toolkit.amazonqInstall.dismissed'
     | 'aws.amazonq.workspaceIndexToggleOn'
-    | 'aws.toolkit.separationPromptCommand'
-    | 'aws.toolkit.separationPromptDismissed'
     // Deprecated/legacy names. New keys should start with "aws.".
     | '#sessionCreationDates' // Legacy name from `ssoAccessTokenProvider.ts`.
     | 'CODECATALYST_RECONNECT'
diff --git a/packages/core/src/shared/telemetry/activation.ts b/packages/core/src/shared/telemetry/activation.ts
index e9fa6b4c2b1..5b1ba3e5a56 100644
--- a/packages/core/src/shared/telemetry/activation.ts
+++ b/packages/core/src/shared/telemetry/activation.ts
@@ -40,7 +40,6 @@ export async function activate(
     productName: AWSProduct
 ) {
     const config = new TelemetryConfig(settings)
-    await config.initAmazonQSetting() // TODO: Remove after a few releases.
 
     DefaultTelemetryClient.productName = productName
     globals.telemetry = await DefaultTelemetryService.create(awsContext, getComputeRegion())
diff --git a/packages/core/src/shared/telemetry/util.ts b/packages/core/src/shared/telemetry/util.ts
index 67a2d460dd8..a81dd8fc12d 100644
--- a/packages/core/src/shared/telemetry/util.ts
+++ b/packages/core/src/shared/telemetry/util.ts
@@ -7,7 +7,7 @@ import * as vscode from 'vscode'
 import { env, version } from 'vscode'
 import * as os from 'os'
 import { getLogger } from '../logger'
-import { fromExtensionManifest, migrateSetting, Settings } from '../settings'
+import { fromExtensionManifest, Settings } from '../settings'
 import { memoize, once } from '../utilities/functionUtils'
 import {
     isInDevEnv,
@@ -65,16 +65,6 @@ export class TelemetryConfig {
     public isEnabled(): boolean {
         return (isAmazonQ() ? this.amazonQConfig : this.toolkitConfig).get(`telemetry`, true)
     }
-
-    public async initAmazonQSetting() {
-        if (!isAmazonQ() || globals.globalState.tryGet('amazonq.telemetry.migrated', Boolean, false)) {
-            return
-        }
-        // aws.telemetry isn't deprecated, we are just initializing amazonQ.telemetry with its value.
-        // This is also why we need to check that we only try this migration once.
-        await migrateSetting({ key: 'aws.telemetry', type: Boolean }, { key: 'amazonQ.telemetry' })
-        await globals.globalState.update('amazonq.telemetry.migrated', true)
-    }
 }
 
 export function convertLegacy(value: unknown): boolean {
diff --git a/packages/core/src/test/techdebt.test.ts b/packages/core/src/test/techdebt.test.ts
index caa9a977b62..69e557100f7 100644
--- a/packages/core/src/test/techdebt.test.ts
+++ b/packages/core/src/test/techdebt.test.ts
@@ -10,6 +10,7 @@ import * as env from '../shared/vscode/env'
 // Checks project config and dependencies, to remind us to remove old things
 // when possible.
 describe('tech debt', function () {
+    // @ts-ignore
     function fixByDate(date: string, msg: string) {
         const now = Date.now()
         const cutoffDate = Date.parse(date)
@@ -38,14 +39,4 @@ describe('tech debt', function () {
         // This is relevant for the use of `fs.cpSync` in the copyFiles scripts.
         assert.ok(semver.lt(minNodejs, '18.0.0'), 'with node18+, we can remove the dependency on @types/node@18')
     })
-
-    it('remove separate sessions login edge cases', async function () {
-        // src/auth/auth.ts:SessionSeparationPrompt
-        // forgetConnection() function and calls
-
-        // Monitor telemtry to determine removal or snooze
-        // toolkit_showNotification.id = sessionSeparation
-        // auth_modifyConnection.action = deleteProfile OR auth_modifyConnection.source contains CodeCatalyst
-        fixByDate('2025-06-06', 'Remove the edge case code from the commit that this test is a part of.')
-    })
 })
diff --git a/packages/toolkit/.changes/next-release/Removal-1c5617ae-50c9-4de1-a191-a2d57dce5bd7.json b/packages/toolkit/.changes/next-release/Removal-1c5617ae-50c9-4de1-a191-a2d57dce5bd7.json
new file mode 100644
index 00000000000..d49140750c8
--- /dev/null
+++ b/packages/toolkit/.changes/next-release/Removal-1c5617ae-50c9-4de1-a191-a2d57dce5bd7.json
@@ -0,0 +1,4 @@
+{
+	"type": "Removal",
+	"description": "Amazon Q: No longer autoinstall Amazon Q if the user had used CodeWhisperer in old Toolkit versions."
+}
diff --git a/packages/toolkit/.changes/next-release/Removal-6703e62b-3835-402b-b187-b327c58f425b.json b/packages/toolkit/.changes/next-release/Removal-6703e62b-3835-402b-b187-b327c58f425b.json
new file mode 100644
index 00000000000..7cb1f436b51
--- /dev/null
+++ b/packages/toolkit/.changes/next-release/Removal-6703e62b-3835-402b-b187-b327c58f425b.json
@@ -0,0 +1,4 @@
+{
+	"type": "Removal",
+	"description": "Auth: No longer inform users that Amazon Q and Toolkit extensions have separate auth sessions."
+}