Problem with rotating Foliage after save and reopen project.

Hello, I have a problem with randomly rotating foliage (tundra boulders), downloaded from Megascans, after putting it on the map and setting it manually using a pivot some of them, after saving and running the project, the added foliage rotates or rises above the map, is there a possible solution or any tip what I did wrong ? Foliage moves after saving
I found another same topic but there is no tips, about problem or solutions… :pleading_face: