Today I had to manually migrate about 30 emails to Office 365. After the emails were migrated, I was manually updating each of the IMAP folders to get the emails within to show until I found a handy script.

If any of you run into the same issue of user’s email within their IMAP folders hiding themselves after a migration, this script might prove useful!

https://www.howto-outlook.com/howto/fix-imported-imap-folders.htm