Problem: An invoice did not calculate as expected, or some charges were missing.  Need to determine the reason

Solution:

Under SHIPMENTS - Activity Log

1. Search for the invoice number
2. Check the log, far right column
3. It will break down how charges were added or were skipped and why

Once you fix the schedule or otherwise you can even test in the customer setup screen

1. Under Setup -> Customers
2. Create/Edit customer and load customer
3. Once you have inputed a brokerage schedule there is a "TEST" button you can use to test a file number against