Move emails from imap to office 365 mailbox in iOS Mail
I have several mailbox accounts on iOS, including three Office 365 accounts and two IMAP accounts. I can move emails between the IMAP accounts, or from O365 to IMAP, but not IMAP to O365, or one O365 account to another, as that option is greyed out under "move this message to a new mailbox".
Is there any workaround, other than turning off email for the O365 accounts and reconnecting separately using IMAP instead of Exchange?
This feels like keeping a generator in the trunk of a Tesla. However, it does seem to work.
iPhone 7, iOS 11.2.1