Gary,
Having a quick try before buy....typical jock! Excellent, but my Scotflight terrain to the west of EGPH appears to have gone (fields etc) - replaced with, what looks like, default terrain.
Should I just reload my Scotflight software and see if that cures it? (Scunner if I have to, due to my edits for EGTH/PJ etc.)
Or shall I wait until any initial issues are resolved. (If it is a bug...)
The Scenery need to remove the MS default Grass 'slap' or base, the side effect is to remove any other VTP data in the same grid, this is probably the reason. So its not a bug and is needed by most.
Its should be easy to solve just remove file EGPH_VTP1.BGL file from the products scenery folder.