I make fixtures that hold injection molded parts.  I frequently use "up to body" when creating them so that the part fits perfectly within the fixture.  I have a part where two pieces in the assembly are showing on the A surface.  I would like to use the up to body feature over both parts but it only allows me to use it on one.  Is there a way that I can merge the two parts to make one or is there an easier way to do this?

Thanks, Lindsay