Counting journal posting case AX2012

Dear all:

Hope you are doing very well.

when I post counting journal , the system generates only loss transactions (post loss financial amount to item group loss account defined in the inventory tab in the item group definition) and not post any transactions to the profit accounts(not post profit financial amount to item group profit account defined in the inventory tab in the item group definition) but it reduce the item cost , is this normal behavior from the system?? note that I use weighted average in the item model group.

Thanks in advance.