UE 4 save game on Android not compatible with UE5?

Development Platform & Builds Mobile
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1

Hi,

I have a android game live, developed and build with UE 4.27
I have switched now to UE 5.0.3
After some minor struggling, everything seems to work fine, except loading save games.

UE 5 version works with another UE 5 version. Saving and loading the save game.

But after updating the app from UE 4 build to UE 5 version the save game can not be found anymore.

I tested several possibilities. But it came down to the unreal engine itself. I don’t know why.
Does save game exists returns false for all save games.

I update the app through the Playstore and it is a release shipping build.
Never had issues with the save game before.

Does anybody else have this kind of issue and more importantly, does anyone has an idea how to solve this?

The app is live and a not working save game would be a big issue of course.

Thanks for your help!

2

After merging all changes from UE 5 back to UE 4 I can confirm, that only the Unreal Engine version cause this issue. At least on Android I can not recommend to upgrade to UE 5 if you have a published game build with UE 4 and need to load save games.