I had this a couple of months ago, only the days that conflict (actually overlap, or hit a 12 hour buffer) will be dropped. The dropped days will be in your makeup bank, the hours that are dropped are available for CIC award up to the total hours dropped +6 ( I'm pretty sure it's +6) The total number of hours that are available for CIC award will be shown to you in the conflict input window. If you don't do a CIC award the hours just stay in the makeup bank.