IDOC document help?

Hello! So I uploaded my parent’s 2015 federal tax Returns, W-2, and form 1099, and that’s great and all, but then I noticed here http://admission.enrollment.cmu.edu/media/W1siZiIsIjIwMTUvMTAvMDYvMTJfMDlfMTRfODgwX0FwcGx5aW5nX2Zvcl9BaWRfYXRfQ2FybmVnaWVfTWVsbG9uLlJlZ3VsYXJfRGVjaXNpb25fMjAxNi5wZGYiXV0/Applying%20for%20Aid%20at%20Carnegie%20Mellon.Regular%20Decision%202016.pdf?sha=e35c15f2

that we were supposed to submit signed copies of these forms, which we didn’t and now we can’t remove the files from IDOC. Does anyone know what’s going on? Should we print everything out, sign and scan them, then upload them again? I’m also applying to other colleges like Duke and Columbia, and I can’t find anything about signing forms for those. Thanks in advance!