In case you're wondering how Flight Replicas' FSX aircraft do in the new MSFS, we've been trying a few out thanks to Plane Converter. For the most part, the more recent the release, the better they do. The fewer the 2D gauges in the VC, the better, for example, as they only show as white outlines. There are still many issues, of course, and hopefully MSFS will increase the adaptability in the future.That said, the B-24 Liberator, DC-4/C-54 and Halifax all perform well. External animations/visibilities activated in the VC don't work (with the exception of the Halifax bomb doors - no idea why), and the lack of bump maps and proper texture adaptation externally means things are off visually, especially with natural metal finishes.
Other aircraft (like the Heron) would work well if just the transparency textures (gauge and window) could be changed to work in MSFS. If there's time, we'll look into that.