Hello there, Emily33.

Glad you've found this thread and be able to follow the recommendation by my colleagues above.

For the past expenses, you can only get the information once you undo all the matched transaction (expenses). Then, categorize them back so the details will carry in the Memo section. Let's just make sure to select the Copy bank detail to memo from the Banking page.

Here's how to undo matched transactions:

1. Go to Banking on the left panel.
2. Select the Categorised tab.
3. Locate the expenses and click Undo under the Action column.
   

Here are some articles that you can check for additional information:

• Unmatch or move bank transactions after reviewing them.
• Categorise and match online bank transactions. 

Let me know if you have other questions. I'll be around to assist you further. Take care always and have a good one!