Problem with Mates

Hello;

I'm having a problem with getting the mates to work properly. I'min the process of cleaning up a 1000+ assembly. This was suppliedto us by a vendor and all the parts are number in sequental order.I'm having to renumber the parts with the correct PN's.

The problem I have run into is when I replace a part (bolt) withthe correctly number one if I use the replace part function it willplace the part into the original location, not where the part I'mplacing is located at. If I insert it in and then use mates to getit into place I'm get mating faults when doing a concentric orcoincident (face to face) mates to put the bolt in place.

Most of the major parts are fixed to keep things from moving outodf position.

ThomasSolidworksAssemblies