I wonder if others have experienced this issue to do with the tabs used to denote sheets in a drawing?

I often use the tabs to show drawing numbers and as you might expect, tend to have them in numerical order.  Quite often when I re-open a drawing, I find all the tabs are there but in a completely different and random order.  It's a bit like Eric Morecambe's attempt to play Chopin.

Also, if I copy a sheet, the page settings are not retained, so I have to reconfigure them manually (not something that happens in AC).  I guess it's a small inconvenience but quite irritating.