ro time flagging

During a recent audit of our service repair orders by an accounting firm they are questioning our practice of electronic time flagging of repair orders vs lick and stick flagging. They do the auditing for several dealerships and they are unfamiliar with this. I supplied them with a copy of GM policies and procedures which states basically that time records need to be tracked and matched to the repair order but does not say anything about having to use flag sheets. We have been using this system for years and I find it hard to beleive there are not more doing this as opposed to paper flags. We are using REY REY as our systems provider. Am I alone or are there many others using electronic flagging?