Although the new functionality may help with running total, it does not help when trying to roll through a table being able to update a row based on values from the previous row. In other words, anything not aggregate based. Using the TransactionDetail example if I needed to calculate the daily and running performance from one day to the next, I would need to use the formula (Amount - YesterdayAmount) / YesterdayAmount to calculate each rows daily performance. QuirkyUpdate is the only viable/speedy way that I have found to do this.