I'm pretty new to BeamNG so please forgive my ignorance. I recently discovered how to use the Vehicle Group Manager in the World Editor, and for some reason, after the update, all of my saved Vehicle Groups were deleted. I tried to recreate them, but even after saving the files, they were deleted (specifically after I left the map). So far I've found a temporary workaround by overwriting in-game vehicle group files with my own, but there are only so many files I can overwrite. Plus, it looks different from before, and it doesn't have a tab on the side showing you the available vehicle groups. If anyone knows how to fix this, please help, I don't want my temporary solution to be permanent.
They might not have been deleted. They're probably in your 0.29 folder in your user directory. They updated the way the vehicle groups work, it's in the patch notes. I guess this is where the issues have come in.