Is there any reason a basepart would lock entirely in place?

Hey,

I previously asked a question about an object fixed in place that I guess couldn't be answered. This is just a brief question that could help me work it out- Is there any known reasons I'm missing about CFrames that mean they can lock into one fixed position when welded and be unmovable with CFrame alteration entirely.

There are no motors nor welds inside the part itself, Its unanchored and non collidable. It just won't move when I bring its clone out of replicated storage