You can always call and ask. On here, it's just speculation.

I've known them to buy a trip for a res who hasn't flown in a while. If they're fat on reserves, it's actually cheaper than sending them to the sim.

The time/date stamp changes if they go back to modify the rotation. I saw one the other day that had an award time after dept time (actual, not sched)

I wish they would always put a note on one when they've done something funky. Would probably save them from answering a few phone calls