Hello. In first, I want to congratulate you on your wonderful software.
I've found a strange behavior while copying a whole test session. My will was to duplicate a test session and run it again to verify if my colleague have fixed a couple of bugs on our RFID reader. I would expect to get the same sort order of test cases, but the sort order is zero on the copied session.
I attach 2 screenshots where you can see the sort order of first and second (copied) session.

Of course it's not a problem to manually sort a few test cases; however it would be a problem to manually sort dozens of test cases while testing for example the new release of a complex software.

Regards