Just upgraded from Movie studio platinum 17 to 18. Had i realized that I would have to relearn the whole interface wouldn't have done it. Sorry, but unimpressed.
@kanuck As you've discovered Movie Studio 18 is not a VEGAS product, it is a version of Magix Movie Edit Pro, which is quite different. So it's not a situation that the interface has been changed. VMS has been discontinued and VMS17 is the last version.
Further info here https://www.vegascreativesoftware.info/us/forum/read-first-movie-studio-18-vs-vegas-movie-studio--130402/
Support for MS18 is not available on this site. However, support for Movie Studio 18 is available from the Magix user forum at https://www.magix.info/us/video-forum/.
If you are not happy with MS18 suggest you ask for your money back.