Yes and yes. That is exactly how I knocked out a trip in the last week of June and then a single departure line in July. I had 10 days last week of June and slid right 5. Ended up with 3 in June and 7 in July bid month.
Why anyone would want to sell back a summer vacation is beyond my understanding. I'll never sell back sick at fifty cents on the dollar, can't comprehend that one either. I guess I'm just clueless.