Tony Delista

That sounds great but, I didn't change it, they're nowhere on my device.  Also, my phone has internal and external storage as one thing, not two.  When I created a new one to find out where to put my backups, I couldn't find that either.

Nope.  But Blocktograph (which lost all funcionality many, many updates ago) restored enough to let me get back to my spawn point when I get holpelessly lost.

There was a folder in a backups folder I didn't have that had what looked like one world in it, but when I moved it into my own backup hoping it would overwrite one of mine to a more recent version there was no overwriting.  I can't find out what this mysterious one is because when I created a new world to find out where to put my backups, I couldn't find it.  I've no idea where it's putting worlds now, and even less idea why it deleted mine.

I had a beta update on android a couple of days ago.  My worlds have been deleted entirely.  I created a new one to find out where to place my backups and can't find that either.