Sadly, this happens all the time you do a "clear cache". I always have to pull the folders "gameplay/temp/timetrails" and "vehicles" back form the Backupfolder. Because these are cleared, too. So you can find them in the Backupfolder.
Then backup the vehicles you've put in the vehicles folder. After the cache clearing just move them back in there.
i mean i deleted some telemetry stuff.... --- Post updated --- hm --- Post updated --- guess ill clear cache
just if you know i fond a version that works pbr and fixxe textures but you need to look its on the forums on the outdated version --- Post updated --- kk