The Outlook (classic) client has a registry setting to control moving deleted items from a shared mailbox. The new Outlook for Windows client doesn’t have an equivalent setting, so items removed from a shared mailbox end up in the Deleted Items folder of the user’s mailbox rather than the Deleted Items folder in the shared mailbox. It’s an example of one of the things to fix before the new Outlook can take over.

https://office365itpros.com/2024/10/02/moving-deleted-items/

​The Outlook (classic) client has a registry setting to control moving deleted items from a shared mailbox. The new Outlook for Windows client doesn’t have an equivalent setting, so items removed from a shared mailbox end up in the Deleted Items folder of the user’s mailbox rather than the Deleted Items folder in the shared mailbox. It’s an example of one of the things to fix before the new Outlook can take over.
 
https://office365itpros.com/2024/10/02/moving-deleted-items/  Read More

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