Relink Handling Unit with Inspection Lot

hi, prob an easy one but cant figure it out.
Background: 04 with handling unit management setup. For serial product with 5 units in Box handling unit all with 04 type inspection lot maintained. Unpacked one of the 5 serials. Then repacked the unit back into the handling unit but the inspection lot field is 0.
How do i relink that inspection lot back to the serial on the handling unit.

any ideas.
Background: 04 with handling unit management setup. For serial product with 5 units in Box handling unit all with 04 type inspection lot maintained. Unpacked one of the 5 serials. Then repacked the unit back into the handling unit but the inspection lot field is 0.
How do i relink that inspection lot back to the serial on the handling unit.

any ideas.