Hi @WF ,
As I know, Outlook for iOS seems cannot sync Outlook notes with Outlook desktop client, so I might be a little confused how did you make it. Whatever, if you are using Exchange email account, deleted items usually will go to the "Recover Deleted Items From Server" folder. So, maybe you could check the "Recover Deleted Items From Server" on desktop side and see if you could find those deleted items there.
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