Looks like ADMIN combined a few suggestions into this feature. I did submit a comment:
As a rookie way back when, I guess the Transaction Manager wasn't used correctly, by either trading partner. I checked early trades, I would need to physically see the card in my hand, to determine if I actually received them. So those early trades, any listed card still remains in limbo. However, more recent trades that I checked, ALLS GOOD! At some point I will have to go back and physically confirm the early trades.
So, this is a great feature when using the Transaction Manager. I'm going to slowly review all my trades to see if I physically have the cards. Will require some time to reconcile those early trades.