Add call out regarding subdomain setup as per PM suggestion

Author: RebeccaTamachiro

src/content/docs/dns/zone-setups/conversions/convert-full-to-secondary.mdx

@@ -10,6 +10,8 @@ import { Tabs, TabItem, Render, GlossaryTooltip } from "~/components";
 
 If you initially configured a [full setup](/dns/zone-setups/full-setup/), you can later convert your zone to use [incoming zone transfers (Cloudflare as secondary)](/dns/zone-setups/zone-transfers/cloudflare-as-secondary/setup/).
 
+<Render file="conversion-subdomain-setup-callout" />
+
 Follow the steps below to achieve this conversion.
 
 ## 1. Prepare DNS records

src/content/docs/dns/zone-setups/conversions/convert-partial-to-full.mdx

@@ -6,8 +6,12 @@ sidebar:
   label: Partial to full
 ---
 
+import { Render } from "~/components";
+
 If you initially set up a partial domain on Cloudflare, you can later migrate it to a [full setup](/dns/zone-setups/full-setup/).
 
+<Render file="conversion-subdomain-setup-callout" />
+
 ## 1. Prepare Cloudflare SSL/TLS
 
 In the Cloudflare dashboard, either order an [advanced certificate](/ssl/edge-certificates/advanced-certificate-manager/manage-certificates/) or [upload a custom SSL certificate](/ssl/edge-certificates/custom-certificates/uploading/) for your website or application.

src/content/docs/dns/zone-setups/conversions/convert-partial-to-secondary.mdx

@@ -10,6 +10,8 @@ import { Details, Render, TabItem, Tabs } from "~/components";
 
 If you initially set up a [partial zone](/dns/zone-setups/partial-setup/) on Cloudflare, you can later convert it to use a [secondary setup](/dns/zone-setups/zone-transfers/cloudflare-as-secondary/).
 
+<Render file="conversion-subdomain-setup-callout" />
+
 This page will guide you through this conversion using [export and import](/dns/manage-dns-records/how-to/import-and-export/) and API calls.
 
 ## Before you begin

src/content/docs/dns/zone-setups/conversions/convert-secondary-to-full.mdx

@@ -11,6 +11,8 @@ import { Render } from "~/components";
 
 If you initially set up [incoming zone transfers (Cloudflare as secondary)](/dns/zone-setups/zone-transfers/cloudflare-as-secondary/setup/), you can later convert your zone to use a full setup.
 
+<Render file="conversion-subdomain-setup-callout" />
+
 Follow the steps below to achieve this conversion.
 
 ## 1. Stop transferring the zone

src/content/docs/dns/zone-setups/conversions/convert-secondary-to-partial.mdx

@@ -12,6 +12,8 @@ import { GlossaryTooltip, Details, Render } from "~/components";
 
 If you initially set up [incoming zone transfers (Cloudflare as secondary)](/dns/zone-setups/zone-transfers/cloudflare-as-secondary/setup/), you can later convert your zone to use a <GlossaryTooltip term="partial setup">partial setup</GlossaryTooltip>.
 
+<Render file="conversion-subdomain-setup-callout" />
+
 Follow the steps below to achieve this conversion.
 
 ## 1. Stop transferring the zone

src/content/partials/dns/conversion-subdomain-setup-callout.mdx

@@ -0,0 +1,10 @@
+---
+{}
+
+---
+
+:::caution[Subdomain setup]
+If you also use subdomain setup[^1], consider the [available combinations](/dns/zone-setups/subdomain-setup/setup/#available-setups) and whether your zone conversion could have any implications.
+:::
+
+[^1]: Meaning you have one or more subdomains (`sub.example.com`) added to Cloudflare as their own zone, separate from your apex domain (`example.com`).