Hello there, @mox.

Thanks for sharing the steps you've done and the detailed information about your concern. I'm here to answer your question about auto-fill in QuickBooks Desktop (QBDT).

In QBDT, you can turn on the auto-recall feature in the Preferences. This will automatically fill in or recall the transaction information you've entered.

Here's how to do it:

1. In QBDT, go to the Edit menu at the top left.
2. Click Preferences in the drop-down.
3. Select General at the left pane, then proceed to the My Preferences tab.
4. In the Automatically Recall Information section, place a checkmark on the Automatically remember account or transaction information.
5. Pick Automatically recall last transaction for this name.
6. Hit OK to complete. 

Once done, go back to the check register and try to enter a transaction first. After that, the information will be recalled once you enter the next transaction under the same name.

In case you have any other QuickBooks concerns in the future, you can always check our help articles: QuickBooks Desktop Help articles.

Stay posted if you have any other questions about the auto-recall feature by adding a comment below. I'm just a post away to assist you.