To update a letterhead address go into InCommand --> Client Maintenance --> Locations --> Edit Location --> Open the tab called Print Template Information.
Once changed, Save and close, then retest the transcription to see if it updated properly. If this does not update please put in a ticket. www.emdat.com/ticket/
If your letterhead has multiple addresses being displayed then we hard coded the addresses and we will need to make the change on our side via a ticket.