Transfer saves from PS5 back to PS4

I’m wondering if this is possible or is something that could be added in the future. I was fortunate enough to snag a PS5 and have been enjoying borderlands 3 on it, this weekend however my friend will be coming over and we want to play split screen on PS5. He’s going to upload his save on PS4 so we can do this. Once he goes home though he will want to keep the progress and loot we earn on his PS4. I hadn’t seen any other posts about this, so maybe it’s to niche for Gearbox to bother with. It would be really nice right now though during the transition to the new generation of consoles.

It’s in the FAQ that this is not possible.