Products with enabled tracking by lots.

When I do incoming picking operation, I will use the "Import records" menu of the "Operation" button of picking form, to  import stock move line with lots information. The blue block information will be imported. That's good.

But, the system will create a blank move line as followed —— the yellow block.  I have to manually remove it. How to disable the generation of the yellow line ? Thanks

Picture uploading failed, like following.

To         Lot/Serial number name        Done        UoM

xxxx     12345                                        11.00          units       ---------- blue line

xxxx                                                        0.00          units        --------- yellow line