Using New Outlook on Windows for personal email, calendar, and contact management
This is why I hate it when the eggheads at microsoft think they make things better, none of your solutions work, I want to save my emails from my client's in my client's folder with the rest of their stuff, you made something simple into a nightmare.
My suggestion is for Microsoft to fire everyone on the outlook team and start over because your "New Outlook" is a POS.
Next time before you tell people how to do something make sure it works.