Cause total logic: One Time Transactions + Pledges minus (Refunds + Splits)
Activity trail Sum total logic: Everything that appears on the various line item minus inactive transactions (Greyed out in color, Declines, Refunds, Splits)
View only active transactions for a particular cause.
1. Create a new Campaign related to your Cause in same way as an existing cause, such as "Cause Name (Internal Use Only)."
2. Use the following filter (Cause Name + All Transactions) to bulk edit all activities associated with a Cause EXCEPT one-time transactions, and assign those other activities to the internal campaign for this Cause.