First, I prefer to think “in-place conversion to different distro” than “upgrade”.
You should contact the maintainers of ELevate to tell them of “another target distro” (as the v2 is a special el10).
Personally, I do use fresh install followed by restore of user data and config. Most of user data is in separate filesystem, i.e. “trivial” to keep, and config has to adapt to different versions anyway.