Yeah it all moves once you drop off from max draw weight. Not much, but it does change since the limb timps come closer together when the poundage is relaxed.

Once you get the new strings on and all is well, make sure to write down all the specs of the bow when it is at your liking. That way you can do a simple check to see if anything moves.

Is the nock height and peep sight still at the correct location?
(when I used a peep I measured it's location compared to the center of my string loop as a reference point)