Reports FAQs : On the Credit Card Listing report, why does the Billing Transaction (Billing Txn) column sometimes have a transaction number and sometimes not?

On the Credit Card Listing report, why does the Billing Transaction (Billing Txn) column sometimes have a transaction number and sometimes not?
The Credit Card Listing report (Integrated Billing) and the Credit Card Transactions report (QB Integration) began displaying a new column titled Billing Txn with the 1/17/2014 software update. Here’s how that column is being populated:
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Other Notes:
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