Saves made on the PS5 version of Spider-Man Miles Morales are only compatible on PS5, and can’t be migrated or imported to PS4.

I recently bought the PS4 version of Miles Morales to get two versions for the price of one. Why not? Grab the PS4 version and get a free PS5 version. Since I own both a PS4 and PS5, I figured I could trade off with my girlfriend; she could play the PS4 version, upload the saves, and I could pick up right where she left off on PS5 (and vice-versa).
Unfortunately that’s not possible. Miles Morales supports PS4 to PS5 save migrations, but you can’t do the reverse. Any saves you make in Miles Morales on PS5 are locked on PS5. These saves can be uploaded to PS Plus, but you can’t download them to the PS4’s HDD. The saves simply don’t show up on PS4’s PS Plus cloud download section.
What’s frustrating is that both a PS4 and PS5 version of Miles Morales can be…

