In my experience you always jump lots of people when you rebook because of IROPS. I just posted in another thread the other day about ending up 2/49 as an FO after rebooking. In fact, if you have multiple options after the need to be rebooked last minute, and one or more of those options is Y = 0 F > 0, you can book directly into F, even when other options in Y are available.

I have never gotten an MQM bonus in these situation.