Business central - my setup is not posting to material cost (COGS) correctly

In inventory setup we have the automatic cost adj set to “always” . Should I still run the item cost adjustment manually? Just wondering what could cause the COG to post in year 2019. Could it be because I have few PI posted in 2020? . Also to clarify, I have not restricted any posting date in the ledger setup and haven’t closed prior years as yet.