I found a working Mac solution!! (If you are on PC, I’m afraid I can’t help).
What you need to do is install Apple Pro Formats 2.1 (found here https://support.apple.com/kb/DL1396?locale=en_US). This will add MXF support to Quicktime, giving you the ability to import Avid MXF files into Premiere (and presumably Final Cut, though I can’t speak to that).
If you do not have Final Cut, you will need to install Apple Pro Formats via the instructions found here: https://www.martin-thoburn.com/vj/install-apple-prores-codec-without-final-cut/
I ignored the Application Support components and only installed the Audio and Quicktime folders, and was able to get it up and running in about 5 minutes. Now I can successfully import Avid AAF sequence exports into Premiere. I have not been able to get an audio track working yet, but this should help the majority of you!
Good luck, friends!
Grant S.