CC doesn't matter for cost reduction or skill up. As long as it's the same unit you have a chance for cost reduction regardless of CC/AW. So go ahead and use lvl 1 (or whatever) units to CR/SU a CC/AW unit.

Quote Originally Posted by Tenhou View Post
3. Every 1½ months ish i believe.
I thought this was way off but then I checked the dates and your right about every 1½ months