The rebuild is still going, which isn't surprising, because the client has 1.6 million records in SO_SalesHistory. On a whim, I decided to try data conversion in 2014 again. When it errored this morning, it showed some modules converted to 4.50, while others were still at 4.40. The data conversion says it has completed and all modules are now at version 2014. Do you think this is true? Or should I migrate and convert again after the rebuild finishes?