TR_GLTRANSACTION_UPDATE

CREATE trigger [dbo].[TR_GLTRANSACTION_UPDATE] 
   on  [dbo].[GLTRANSACTION] 
   after update
as 
begin
    set nocount on;

    if update (ACCOUNT) and not update (GLACCOUNTID)
        update GLTRANSACTION
        set GLACCOUNTID = t3.ID,
        CHANGEDBYID = t2.CHANGEDBYID
        from dbo.GLTRANSACTION inner join inserted t2 on GLTRANSACTION.ID = t2.ID
        inner join dbo.GLACCOUNT t3 on t2.ACCOUNT = t3.ACCOUNTNUMBER

end