Missing Purchases Clearing GL account in Daily Transaction register

I have a client on 4.3.  They had deleted some product lines but there were still items on PO's with those product line.  I had them recreate the product lines (checked them to be sure they were correct) but they still have instances were the GL account for purchases clearing is missing in the daily transaction register.   In the past, recreating the product lines had fixed it for me but I am perplexed why it is still happening.    Any thoughts would be appreciated.