When I transfer a mor file to the beamng vehicle file it winds up missing parts or the mod disappears and or don’t drive.
I apologize for the rather blunt response, but the easiest way to solve this issue is to not use mods from modland. While some of them are good most of them are programmed badly and may cause issues with functional mods like BeamMP, a number of them are also stolen and are not being updated as a result. Our official stance is to advise everyone to stick with reputable sources for mods such as the Repository or BeamNG Forums as well as websites linked out from the social medias or Patreon member areas of reputable mode creators.
With that off the table
In order for any mod to work in BeamMP they cannot be installed to your local game, they need to be installed in the Resources folder in the server itself. Local mods do not work in BeamMP as the game runs off the information provided to everyone’s local client by the server. If you need assistance installing a mod into BeamMP you’ll either need to talk to the owner of the server you are attempting to connect to or, if you own the server, you can use a guide to find the proper location to place the file to load the vehicle into multiplayer.
All single player mods should be disabled when playing BeamMP.