I've done this several times. I usually extend my 7 R days into 10 R days off with pay. The futures scheduler then rebuilds the rest of your line (the remaining 5 R days in this case). They can (and frequently will) put them anywhere, having nothing to do with their original placement in the month.

That said ... thay almost always leave the carry-in R days alone if it doesn't conflict your vacation.

Hope this helps ....

Questions? Call your futures scheduler ...