Agreed.
However, there are also instances where revised 'approved' drawings reach the site before the original "approved" installation is complete. In this case, there should be no change order unless it involves extra material and labor cost to the contractor... and again, how this is to be handled should be spelled out in the contract.
True to the end but if any portion of the oringinal document that was issued for construction was installed whether completed or not it is a legal change order/scope change.
dick