Payment Number to Order Number

Hello All,

I was wondering if there is a way to a) search for Records using the Payment Number (You can usually find this in Order History tab any time a transaction occurs) and/or b) is there a way to see what Payment Numbers belong to what order number. We've run into a few Payment numbers that seem to have no order, but still appear on our Incomplete Credit Card Transactions Report, and I'm trying to track them down.

Thanks,

Maurice