Cost is Adjusted field

We are running Navision Financials 2.60B. I noticed that every time we do a negative adjustment in Item Journals or Physical Inventory Journal, the “Cost is Adjusted” field in Item Ledger Entry is not checked (=true). I then run a “Adjust Cost - Item Emtries…” in the Periodic Activities and “Post Inventory Cost to G/L”. Even after running this 2 function, the negative entries are still not checked. Does anybody knows why the cost does get adjusted? Thanks!

If the flag does not get checked, then the negative entries have not been adjusted. Check the entries which these entries are applied to. I would guess the flag is off on one or more of these positive entries.