[GraemeJ]

Therefore, I think I will stop updating ALL of my tablets and avoid ANY possibility that a saved database from one tablet would be incompatible with another tablet.

I rather tend towards the same view. Everything seems to work fine as it is now and I can't imagine that future enhancements will give me any advantages over what I now have.  I'm a great believer in the old adage 'If it ain't broke, don't fix it'.