Item Numbers not right

... ahh, this drawing interface....  I have an assembly with 25 items in the parts list.  I HAD just 23 in the list, but I had to add a couple of components.  Unfortunately, the Parts List brought them in as items #26 and #27 instesd of #24 and #25 (see attached).  I can "cheat" the Parts List and the Item Balloons, but I really doubt that's the way the folks who programmed SW intended it to work.  Unfortunately, I can't figure out where I have to choke it to get it to renumber the Line Item numbers so they don't skip a couple.  How do I DO this???

SolidworksBill Of Materials