unit cost found in item card although all entries is 0

ahmedba

I want to create this item from first because it has proplem in unit of measure and quantity so that i do as following

1- adjustment inventory to this item to 0

2- make revaluation to all entries to this item to 0 using revaluation journal and make cost revalued to 0

3- adjust cost-item entries to this item

4- i open inventory field from item card to this item again i see all cost entries is 0 and inventory is 0

but in card in unit cost not equal 0 why and are this affect in g/l

although i check inside unit cost deop down menu i found all entries in item ledger entries is 0 and value entry is 0 to every entries specified this item

Are any wrong in steps i do it
thanks