I was trying to avoid paper filing. If you try the barn rehab form route you suggest, from what I saw in doing that with the historic rehab credit, maybe best not to claim $0 at first, put maybe $1 in, keep that in until you get to attach your PDF form for the conservation credit (putting that one in instead of what they expect for barn rehab), then after they say you've successfully attached your PDF file, go back and put $0 in the credit you really don't want, but that you initially did only because it was your way to get around their annoying change from how we could do this in previous years.
