Project issue Transaction

Hi

I have done Mis transaction type is Project issue 

for ex 20 qty  following transaction lines generated in project module

Trx line 1

=======

Qty will shown in positive

WIP Account   -- Debit

Stok of Prj Acct  -- ----- Credit

Trx line 2

========

Qty will shown in negative

Stock of Prj Acct --- Debit

WIP Account                   -- Credit

After run create accounting from cost management source  accounting entries generated posted  for first  line

and when WIP account will get knock off  ? do we need to do  separate activity or run any concurent

for journal generation for second trx lines ... Please suggest

Thanks