It is no longer possible to copy the match ID or position ID individually. This can have unfortunate consequences.
If you are analysing a game and want to experiment with position variations, you might want to copy the ID to a new game, or set the position within the same game.
If you copy and paste the ID, you can wipe out your original position without warning, including your time consuming rollout!
I'm assuming that this is because the match ID includes the score, so any previous data that might contradict the match id gets wiped.
Possible improvements: 1) Allow just the position to be copied. 2) Warn before erasing old positions when you paste an ID 3) Do something clever that will allow the whole ID to be pasted without erasing existing data. Perhaps filter the score. Perhaps allow oddities such as allowing multiple games at the same score. (This would be great because it would allow a player to have a single practice session with all games at a certain score).
In fact, digressing somewhat, maybe among the Variations (backgammon, nackgammon, etc, one could paste a Position/Match ID so that every game would start from that point.