when do fifo/lifo, only when there avail (amount>0) moves, otherwise goto other ways
when do fifo/lifo, only when there avail (amount>0) moves, otherwise goto other ways

john-wang-metro/metro-openerp,john-wang-metro/metro-openerp,837278709/metro-openerp,837278709/metro-openerp,john-wang-metro/metro-openerp,837278709/metro-openerp