Bug when converting a project to the latest version

, or someone who has a workaround

:

After having converted a project from TM 2023.1.0 to version 2023.1.2, all the vegetation is a mess: every plant

is at a random location and at a wrong altitude.

Vegetation is gathered around a pivot point that is useless: no way to move/rotate all the trees (for instance) at once.

So I have to restart it from scratch :-(