Update Transfer To Workspace section w/ limitation (#4611)

* Update Transfer To Workspace section w/ limitation

* Editing verbiage

* Update src/guides/usage-and-billing/account-management.md

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Co-authored-by: markzegarelli <[email protected]>

Author: daldeano-segment

src/guides/usage-and-billing/account-management.md

@@ -47,3 +47,6 @@ To move a source between workspaces, navigate to the source's **Settings** tab,
 
 > warning "Tracking Plans do not transfer"
 > Segment recommends that you disconnect Tracking Plans from Sources before you initiate a workspace transfer. Once the transfer is complete, add and reconnect your Tracking Plans in the new workspace.
+
+> warning "Sources can't be transferred to EU workspaces"
+> Though transferring sources to the EU workspace is not blocked in the UI, the transfer will not work as expected. This feature is not supported for cross region migration. Segment recommends that you re-create the source in the new workspace.