Asset Management - Physical Inventory with Multiple Business Units

We implemented Asset Management a year ago. We are currently on 9.2 PUM 55, 8.62.09.
We currently have two business units, GOVMT and EDCTN. While processing Physical Inventory - our warehouse staff scanned assets at one location. This scan included assets from both Business Units. While scanning assets - there is no way to tell which asset belongs to either Business Unit.

On the "Define Inventory Occurrence" page, you are only able to include one Business Unit, and not able to add a page to add a second one. When we generate transactions for the Inventory, the assets associated with the 2nd Business Unit are not included, since the Business Unit was not included in the Occurrence.