I thought I'd give it a go. I was very happy with the OLD Outlook, until my Yahoo account started to play up after an Outlook update. All my Yahoo mails disappear from my inbox and when they do decide to appear back I cannot delete them (I delete them and when the next sync takes place they re-appear. I checked yahoo Mail online and the delete function in Outlook isn't deleting them from the mailbox.).
So I approached support and logged another issue with them. They came back and the first thing they said was 'hey why don't you try the NEW outlook, that doesn't have this problem'. So I decided to take the plunge and I turned on the NEW outlook. After a while the data gets automatically imported into NEW outlook, so my offline local folders now work (yes sounds good, but keep reading!). I started to check over the data and indeed it looked ok, so I thought let me run with it for a bit...
My first task was to move a few emails over to my local folders, if I remember they were orders and I have a local offline folder where I put all those emails for reference... But when I tried to move them I wasn't being given the option to move to a folder!?!? I tried to do it manually and couldn't! SO I went back t support and logged another issue... After 30 minutes they told me to delete the IMAP account and recreate it.. So trying to think positive I done this... And it did work, however I noticed that I couldn't change the name of the account and I couldn't add an alias email name to the account (Things that I can do in OLD outlook). I've had a play round with things but no matter what I try and what support tell me to do I can't get my iCloud IMAP account to allow me to move emails to offline folders. And then I started getting the same Yahoo issue on NEW outlook, so thought stuff that, better the devil you know and went back to OLD outlook.... Tried and gave it a chance, but its crap!
One big thing to let you know, if you use NEW outlook and move emails to your offline folders, but then decide to go back to OLD outlook, you will lose all the emails you have sent into the offline folders! Nice touch Microsoft! Not!