Personally I have not found any problems with my sceneries in P3D_V4.5. I have also converted objects from FS9 scenery to FSX and used those in P3D with no obvious problems. For me it was a case of "Why do two versions of a scenery project if one version works in both Sims?"
Professional Scenery Developers could probably list a lot of reasons why there should be two separate versions, but for me, a full FSX version has worked fine for either one.
Bookmarks