@ chewgumdrawlines: only some reassurances that it's not over yet!?! Fingers crossed for you!
@yestoyeahhhh: for most schools you can reuse what's in their system, but it helped me to confirm that in advance and find out the person to follow up with the next fall. You may have to remind them at that point. I phrased it as "my recommenders have already done so much for me and I want to save them some work." Also, I had to get creative with the online forms for some schools that forced me to enter info of recommenders. I creatively used the forms to make a note saying my last year's letters were on file and to ask the point person I'd spoken with about any questions. Then I used three of my own extraneous email addresses in the blanks, so my recommenders wouldn't get new prompts to submit letters. A little weird, but it worked!