Hi,
Thank you for posting in Microsoft Q&A forum.
Agree with @Rahul Jindal [MVP] . For these few devices, we can follow below official articles to enroll Configuration Manager clients to Intune and switch workloads to Intune, then upgrade the devices to Windows 11 as normal. This will be a good path.
Tutorial: Enable co-management for existing Configuration Manager clients
How to switch Configuration Manager workloads to Intune
Thanks for your time. Have a nice day!
Best regards,
Simon
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