Thanks for your follow up.  Yes, we did finish conversions, although not without hick-ups.  The non-profit 990s did not convert at all (no conversion available).  We converted 1040s, 1041s, 1120s, 1065, and a few 1120s. The original files were not in pure Pro FX format so several calls to CCH support were needed to help with that. We tried to do the conversion in batches but that seemed to confuse the Lacerte software, so lots of returns were converted multiple times. The extra returns had to be deleted. We did get through the process, but it wasn't that easy. A few returns had to be typed in manually. It was actually quicker than wrestling with conversion process.