7. The computer-implemented method of claim 6 wherein the saving of the electronic document at the server computer further comprises removing any comment objects that have unique identifiers with values less than or equal to a unique identifier of the new comment object.
7. The computer-implemented method of claim 6 wherein the saving of the electronic document at the server computer further comprises removing any comment objects that have unique identifiers with values less than or equal to a unique identifier of the new comment object. 9. The computer-implemented method of claim 7 , wherein saving the electronic document occurs responsive to at one of: a manual save operation, a timed save operation, or a triggered save operation.