Ill state again that I'm far from a binding expert.
However, I see no problem with using the same holes twice. TWICE! Any more than that and I'd be worried.
I've done a shitload of work on my heelpieces, requiring me to take them off like 3 times. I had my dad weld two broken base plates, haha! One of them ripped out after being remounted so much, and I actually drilled new holes and remounted a heel piece myself. This complete bullshit mounting job is enough to make any shop tech run me down and strangle me, but they held up for a month of lifts and some post-season nonsense. I plan to use these sticks for the early season, and hopefully they will hold up. I ski like a complete asshole though, so for all I know, they will rip out on my first run.
Basically, what I'm saying is that if my mount holes can put up with this much abuse, I'm sure a single remount on your skis will do you fine.