I think when the offer to install v10 was sent, it should have identified those features that were being removed - even if they were going to be restored soon. I don't think that this was made clear - after all, the new look and added features doesn't imply that some basic features would be removed.
Also, I have Evernote installed on several windows machines (work, home, laptop) and an android phone. The reason to use Evernote is to have one trusted place for all my "stuff" - don't always succeed, but has been of great benefit when I have been working away to be able to dig out and forward information for end-of-year tax return (and saved me a lot of fines for late filing!)
Import folders and editing creation dates are show stoppers so I need to use the legacy version. I didn't realise, so spent a lot of time trying to find where such features may have been hidden in the new UI.