okay i found the reason
this was what i was expecting, and guess what? it’s just too common of an issue to not happen
the progam you are using is optimizing the size of the model, you can see the door you made no longer alligns with the original clay door, and the matrix size is shinked to match the model’s size and not the pre-set
i believe there was a similar issue tat happened to @MelOzone a while ago, and i think we managed to fix it through this post
the solution was something about keeping the size of something in the settings, but i don’t use voxelshop so i personally don’t know where the settings are