Microsoft Dynamics Axapta Technical,Functional Coverage

If you are having buffer size issue while adding more fields in SalesTable. I thought to create a parallel table with SalesTable which could be used in future customization  and would associate this table on SalesTable form using SalesId relation on this new table with SalesTable. It works but only when You create new records in salesTable due to the relation defined between SalesTable and newly created table. However, it is not working with existing sales orders as there is not associated SalesId (from sales table) in newly created table. If You will go with this approach You have to run a job to update all SalesId from SalesTable to newly created table for existing records. These are other workaround rather than adding a new table or have ever come across with such requirement? 1) Insert Old Data from Orignal_SalesTable to New_SalesTable 2) Under Orignal_SalesTable, create(if not available)/see(if already) three methods, AosValidateInsert,AosValidateDelete,AOSValidateUpdate; These