this is an issue with two of the expenses on my report

I pre-entered both expenses, put in correct values, with correct supporting info (like tip amount, reasons, etc), including the name of the vendor - for the sake of clarity let's assume one charge was to a restaurant for $25 and the other was a snackbar for $22 (both were for food - amounts were close to each other but only within a few dollars)

I uploaded receipts to both

When the charges came through from my card, it matched the card charge for $25 to my pre-entered expense for $22 and didn't match anything to the $22 expense.  The $22 charge is in the available expenses list, but I can't match it to the $22 pre-entered expense because it's already matched.

What is most irritating is that it overwrote the vendor name, changed the expense amount and a few other things AND WON'T LET ME EDIT IT!!!

Note: at the time I manually entered the $22 transaction, I had mistakenly put it as out-of-pocket, which I changed back to pending card transaction once I noticed the error.

How do I unmatch the one that got matched wrong so I can match them manually to the correct expenses?