I can't remember if I have ever managed to do a proper restore of a backup after switching to 64 bit Stellarmate (first version).
It's still an issue which is quite annoying, I went from 1.7.3 to 1.7.4 - not working, now I just did a 1.7.4 to 1.7.5 update, still not working.
Creating a backup works ok, but it's for no reason.

I basically don't care about new functionality, just fix the basic stuff, then add from there (without ruining what we already have).

Please!

From a, usaually, very happy camper since 2018.