Of course they want to duck out on responsibility. Their insurer probably told them to ask for the sign-off.
If your Division 01 Submittals section says how submittals will be handled, and lists the kinds of notations you will mark on submittals, and you don't say that 'approved as submitted' is in that list, they're asking you to bend the terms of the contract. To which I wold say, "tough".
There also may be a part of your Owner-Architect Agreement which says how many times you will review submittals without additional compensation. It might ruffle some feathers, but a memo to the Owner, copied to the Contractor, stating that you have reached the limit for one or many submittal items, and will be billing for extra services, may get the Owner to call the GC and say "if I have to pay them more for looking at things that you aren't getting right, I will deduct that from my payments to you". Sparks may fly. You might want to give examples of what was not corrected or information which wasn't supplied.
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Joel Niemi AIA
Joel Niemi Architect
Snohomish, WA
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