Good news! Scott over at A2A has confirmed the roadblocks that hindered them are gone, and that Accu-sim is coming to MSFS, starting with their Commanche 250!
Scott's post about halfway down page 11:
https://a2asimulations.com/forum/viewtopic.php?f=23&t=72920&start=150
Scott's post about halfway down page 11:
https://a2asimulations.com/forum/viewtopic.php?f=23&t=72920&start=150