Hi, I was reading on this site yesterday but of course couldn't find it again this morning, but the person was talking about not using tee shirts that were screen printed (I think - correct me if I'm wrong) because the ironing would become an issue, with the print causing an issue sticking to something during the ironing process. It mentioned using a pressing cloth though.
I am beginning my very first tee shirt quilt, and was ready to apply the stabilizer last night. Fortunately I read this post first, and I decided to use freezer paper instead of a pressing cloth. The waxy side of the freezer paper applied directly to the print on the tee shirt and peeled off, leaving no damage to the print on the shirt. Voila!