Inventory Profit Margin Report

I can see that this report excludes Kits sold but it also excludes the items sold as part of a kit so does not add back to total Inventory sales for a period? Surely this is bug

These issues were raised two years ago and classified then as a bug. @lubos removed it from the bugs category because it required major structural changes to the general ledger engine. See Inventory Profit Margin report bug when Inventory Kits are sold.