Forget the "disclaimer". A Quit Claim Deed has that built in.
A Quit Claim Deed says basically, "IF and only IF we (the conveyor of the Deed) have any actual interest in the property, THEN we transfer that interest over to you."
In this case, as I've said time and again, The DCHS, Inc Quit Claim Deed "...is worth about as much as the paper it's printed on."