Set order date, appeal & source to null values post rollover

Sorry for the 101, but we're under the gun to get renewal forms dropped and don't have a whole lot of time to dilly dally.

Artistic has gotten creative with our upcoming season and post rollover, we get to touch every order. Yay for us.  When we are done, we want to clear the appeal, source and order date. 

Does anyone already have a script that does that?