NAV2015 Inventory Valuation Report Totaling Issue

We have a client upgrading from 3.5 to 2015. After transferring data and confirming data is identical in both systems, we note that earlier version Inventory Valuation Report shows totals for Cost Amount (Expected) and Cost Amount (Actual). But 2015 version shows both, but shows Cost Amount (Actual) as SUM of original Cost Amount (Expected) and Cost Amount (Actual). Is anyone aware of any issues in totaling for this report in 2015, or settings that would cause this?
Thank you.