Enabling PairModel to work across restarts

From my tests, it seems to me that the pairmodel mechanic is unable to keep track of paired players on server restart. I also tried to use the hide mechanic, but while that is able to do so, it is unable to work on a modeled entity too well, as it seems the hide is undone after a while.

Would it be possible to add to the pairmodel mechanic an attribute that makes it work across server restarts?

Something like this

  Skills:
  - model{mid=helloworld;save=true} @self ~onSpawn
  - pairmodel{hidden=true;persistent=true} @trigger ~onInteract