Hello anonymous userCheung-4979 - Welcome to Microsoft Q&A community forum!
Thanks for reaching out to us. About transferring an EA subscription to a CSP is possible. However, there are certain conditions as shown in the snippet below.
Reference link - https://learn.microsoft.com/en-us/azure/cost-management-billing/manage/transfer-subscriptions-subscribers-csp#transfer-ea-subscriptions-to-a-csp-partner
Note: You may want once again confirm this with Azure subscription management team to better understand if there are any other caveats in transferring an EA subscription to a CSP.
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