Odoo Version 8.0-9d0bd28

I have a 3 Steps Outgoing Shippings (Pick + Pack + Ship)

My Process:

Picking Area: I pick 5 units = OK

Packing Zone. I put in one Pack the 5 units (PACK0000020) = OK

Shiping Zone. The system shows the 5 Units instead the package. If I try to scan the package It wont recognize

I need to scan the Packs in the shiping area. How can I solve this?

Thanks