Example: Suppose you adjust the job total by 100.00, and the estimate includes a 10% addon based on the labor category. Sage Estimating (SQL) spreads just enough of the variance (about 90.00) to allow for the 10% added for the addon. This guarantees that the estimate total increases by the correct amount.
Spreading the entire adjustment plus the addon percentage to the spreadsheet would cause the estimate total to increase by more than the variance shown.