How may I find the last matched and /or added transactions?

Hi there, gio,

You can find the added or matched transactions in the In QuickBooks tab.

Here's how:

1. In the Banking page, select the In QuickBooks tab.
2. Select the bank transactions and click on the Undo button. 
3. Go back to the For Review tab to see the undo transactions. 

Don't forget to match them again. You can check this article: How to add and match downloaded banking transactions.

Have a good day!