[AZnuts]

Not exactly the same as what you are saying, but I had a similar discrepancy once in my own records vs. Party. It turned out I had forgot to tally a rebuy I made at the table in my own records.

The Party Hand Histories are tricky this way, because they don't explicity report the rebuy, you just all of a sudden have more $ at the start of the next hand.

So, even though I recorded the proper amount that I "left the table" with, my total bankroll was off. It took a lot of checking on my end before I figured out I was wrong.