Any time the Company cancels a DH, we keep the money. (Bumps for training, SUB, Revisions to operate)
We don't keep the money for PDO bumps.
If you had been offered a SUB trip with a DH that was acceptable to you, we keep both banks.
What we don't keep, is, say for example you have a backend DH that gets extended to a day later with a backend DH. Would be nice if we got Day 1s DH bank and the extended Day's DH. What we do get is the Higher of the 2.
We also don't keep SUB trip banks, or RAT banks that we choose to decline.
So, keep copies of your pairings\bank amounts. Revisions can wind up with a higher bank to use, something that might or might not reflect accurately in our expense system.