Hi, I've had this issue since before unity 2018 but hoped it would get fixed, and apparently it hasn't been, but probuilder seems determined to change lots and lots of things in the scene files every time we change something, which makes using source control very tedious on scenes. Here's an illustration: Now if from there i would be to move something else in the scene, it would do the same kind of changes again (or sometimes only a mesh's m_Name, like this): I don't really understand why all of this happens, especially since it appears to be kind of random (sometimes, if i have only a few pb_meshes in a scene, i can make lots of changes without any issue but then all of a sudden it will decide to change one's name for no reason). I hope this is something that can be fixed, because so far it has been a major annoyance in using probuilder. As you can imagine, it's pretty unthinkable to handle conflicts with those sorts of changes. Thanks for you time, have a good one!