Wondering if anyone else has seen this. Attempts to delete a voicemail from an IMAP connection in Outlook 2016 results in an error message "The operation cannot be performed because the object has been deleted." Marking as read correctly turns off MWI. Marking as unread correctly turns on MWI, so the connection/communication works. Worth noting...performing a Shift-Delete DOES work.
Google results all point to setting "inbox" as the root folder which doesn't change things.
Thanks for any ideas!