[Marten Keekstra]

Since more than a year I use with succes the tool Versionfaker from FocusOnVegas to change the flag of a veg (VPro) or vf (Movie Studio) from or to an older version.
Untill now it failed never with me.
Look here for that and other tools: https://www.focusonvegas.com/movie-studio-vegas-pro-version-faker/