New
#21
I've found that just copying the folders from one account/storage folder to another messes things up when I originally was trying to transfer messages, I'd transfer the old account folder into the new WLMail email account folder but it wouldn't sync & the messages ended up in the deleted folder under storage. I then tried what I've posted & all was fine.
You could create a new folder & drag & drop the mails into that folder from the old one.