Why is there a problem with collecting them? And they need a COPY, not the original. Read the Standards.
Oh, and it is all going to be electronic anyway....no more student record files, is the latest word. So, hang in there, it is all going to be better. Real Soon Now.
There is no requirement in the Standards to copy or collect the knowledge reviews that I am aware of. You can document, copy, or collect. Unfortunately there are still many shops who rip the pages out of the manuals...this is the action I have a problem with. If the shops want to keep copies for their records, make a copy, don't rip the pages out of the student's manual.
"No more student record files." PADI is definetly moving to digital registrations, digital forms and digital signatures but the student record file can still exist. If you were in the Mastering PADI’s Paperless Registration Process seminar at DEMA, a good example was the signed medical form...this can be scanned and uploaded or kept in a student record file kept by the shop. So yes, that student record file can and likely will still exist for a long time. And I suspect the dive shops and instructors that rip the knowledge reviews from the student manuals will also be around for a while also.