I imagine you weren't asking me.  So this is more of a buttinski-esque post.

As of now, Lacerte is still limiting the 3804-CR credit (Pass Thru Tax Credit) by the TMT.  

We're on a similar F boat (again F for 8915-F), with a different issue, in regards to the software changes slash new forms slash IRS new requirements (K-2, 1116 Sch etc.)

My simple answer: Extension.  I'm lucky in that my clientele accepts extension filing and the reasoning thereof.