Insert-Update on same page

A user filters a specific record based upon the record's name and modification level and all the info based upon this filter is then displayed on an edit page. The user can then change any field except for the record name. Any changes are saved as an update to the selected record. However, if the user changes the mod level, an insert statement must be initiated and the changes must be saved as a new record, not an update to the current record, therfore leaving the filtered record as is. Any ideas on how to get this accomplished would be greatly appreciated!!!