Nu, I've had a lot of trips dropped lately for OE and been about 50/50 on getting recovery flying. You can look in open time and get a good idea of what you might get for 23.G. Last time I was able to GS a trip that I expected to get as recovery flying. Not sure how that happened though.

When they do officially drop you from a trip they will either call or give you a chance to acknowledge it in icrew and usually that happens about 24hrs prior to your original trip. If you acknowledge the drop and hear nothing from scheduling by 12hrs prior to your original trip you are clear to do as you wish.