This has been a bug that has been around for a while, but PLEASE, this needs to get fixed. I'm not sure what causes it, but sometimes when creating a PO, the Customer:Job field will be empty, however, in the Projects field - it's filled in. I believe tech support has told me in the past they believe it is related to a change in the name of the customer or something after the proposal is built? Could be, not positive this is it though. But it's annoying to have to, for 15 different PO's - keep adding the Customer:Job so it associates it correctly, especially when we export it off to QuickBooks.