Hi, thank you for your response.  I'm using Desktop Enterprise 2019.  I'm relatively new to QB, but, in my case, I'm almost certain this is a lack of user-understanding vs. a data integrity issue.

Based on the link you shared with the article on class tracking it appears we have everything set up properly.

Now that I'm looking closer at the report, I may have figured out what was puzzling me.  Please check me on this.

Initially, I wondered why the 'Class' column in the Transactions by Account report shows the class that was assigned to some transactions but others are blank, even though I can open the transaction detail and see that a class is in fact assigned.  This is observed when looking at the Transactions by Account report for our cash account.

I think blanks are displayed in the report for any transaction that consists of multiple expense accounts, or if it was a payment made on a bill entered in A/P.   Is this understanding correct?