As a shop I will mark any post before I move it and will move it back afterwards. I usually only move it if I have to. There are occasions where it slips my mind to move it back. No ill will intended - just a lot of other things to be focused on. I usually remember before it leaves though...
Don't condemn a shop if they forgot to move it back. Ask them about it.
For yourself - if your position is tweaked and was hard to get to then document it so you have it for your own records.