Android save games can't be found after updating to UE5

I am releasing an Android app.

I have currently uploaded an app I made with UE4.27 to the store, but I need to update to UE5.2 due to Google requirements.

I can update it with the build I made with UE5.2 without any problems, but I can’t find the save game.

If I update again with the UE4.27 version, the save data is found. So I don’t think the save game itself has disappeared, but I can’t load it, and the node that checks if there is a save game says there isn’t one.

I try not to change the package name of the app at all.

Maybe the save directory has changed?

When I view the project save directory, it doesn’t look like it has changed.

Can I use UE4.27 save data in UE5.2?