IT inventory transfer between locations, leaves a extra extended cost

Hello;

Making an inventory transfer between two locations within the same branch plant , creates 3 lines in the cardex (f4111);

QTY              UNIT COST     EXTENDED COST/PRICE

-54000	1000	-54000000
	0	-1
54000	1000	54000000

As i understand the process the original location (A) should reflect an inventroy decrease, while the new location (B) an increasing,

i don´t understand why there´s a line between the movement, without a quantity, or cost, but reflecting a negative price

Why can this happen? I think i can use an inventory adjustmente transaction to balance the cardex

Any help would be much appreciated