Missing a I-20 with previous CPT info, is my OPT doomed?

[Walamogulis]

I lost one of my I-20 and the worst thing is, this one has an CPT-approval. I've contact my school, but they don't have a copy. Now I need to submit the OPT application but I have no idea how to work around this issue. I was wondering if somebody has the same issue and can give me some guidance?

Any info and advice is appreciated!