Hi @si_fox
Teams meeting recordings are saved in OneDrive and SharePoint. Please make sure that the account used to record the meeting is your new account.
Please log in to your new account in OneDrive and SharePoint again, because after changing the UPN, any saved user OneDrive links (such as desktop shortcuts or browser favorites) will no longer be valid and need to be updated.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.