This video helps understand on how to keep your career mode data saved even when it will get wiped in an update.
I don't mean to kill the purpose of your video, but I'm sure the file structure and data saving methods will change with every major update up until full release as quoted below. Currently, as of October 5th, 2022, the methods of which you use in the video will have no effect on whether or not progress is moved between versions or not while the game is still an Early Access title. Your save will break eventually. Even if the "save career mode data" method you mentioned works between 0.26 and 0.27 then I definitely wouldn't count on it working between the next (0.27 -> 0.28), or if someone were to skip versions (0.26 -> 0.29). That would just be a development hell for backwards compatibility. Some career saving methods will probably stay the same, but I wouldn't count on it... BeamNG.drive is in ongoing development, and can completely change before full release.