call uscis, something weird about finger print

My last finger print was made in late 2006, and last time I call them a month ago, I was told that I should expect a notice for a new finger print.
Since I still haven't received the notice, I called them again today, and I was told that, according to their record, my finger print has just been taken, and will be good till 2009....
I would more than happy to skip taking finger print, but shall I worry that they may mess up my case somehow?
Thanks.