In addition to the burden on tax preparers, it's hard to imagine that folks at MI Treasury are going to be thrilled to get a bunch of paper returns to process.  This is not an acceptable response.  Why can't they just let us override the affected lines and attach a pdf of the new form?  I'm planning to contact the MICPA to see if they can work their channels at Treasury to perhaps generate further communication between Treasury & ProSeries to arrive at a better solution.  Maybe if others keep raising this issue we will still have a chance at some progress.