Tracking Editing Entries on Invoices

It would be nice and very helpful to have some sort of feature that allows you to see/track entries that have been edited on an invoice when preparing it to be finalized. Our firm uses ABA coding and unfortunately, not all billing entries have the appropriate or correct coding. Therefore, before invoices are finalized and exported, time entries are edited and properly coded, however, being pulled aside due to phone calls or other interruptions, it is difficult to keep track of what has been edited or where you left off on an invoice, especially if invoices are not edited and finalized in one sitting. Thank you.