FIFO when we use LS POS sales

Dear Support,

We have verified this issue, it seems that the system works perfectly as per FIFO when the sales is done from standard navision module but when the sale is from LS POS, it does not consider the costing as per FIFO

My setups are .

Ne w item = Cost FIFO , costing method = FIFO

Inventory setup :

Automatic cost adjustmnet = Always

Automatic cost posting = Yes

Expected cost posting = No

Purchase concept :

i purchased the item Cost FIFO

Receipt & Invoice concept

Item ledger entry : -
Posting date Item Name qty Cost amount

01/01/010 Test FIFO 1000 1

Posting date Item Name qty Cost amount
02/01/010 Test FIFO 1000 2

so In item card Unit cost field has the value = 1.5


Now it comes to sale :
From POS

Item ledger entry Transactions :

Posting date Item Name qty Sales Amout

.01/02/2011 Test FIFO 10 20


So system has taken the Unit cost vallue when i sell the item .

After running the Adjust Item Ledger Entries Batch job the system should create new entry according to FIFO costing method but the system not creating.

The below entry is missing .

Material account – Retail 5 DR

INV : COGS Account -5 CR

BUT The system behaves correctly when we use the standard navision sales, but it does not generate the needed entries as per FIFO when we use LS POS sales
Appreciate your support on this ASAP, as its quite urgent issue and we are unable to understand the system behaviour.