Inventory Serial Numbers - Only want on Packages, not on Bills

Inventory Serial Numbers - Only want on Packages, not on Bills

We have thousands upon thousands of devices that we receive from our supplier. When we receive an order to our warehouse with thousands upon thousands of devices, we do not want to spend hours upon hours manually scanning those serial numbers into Zoho just so we can use serial number tracking. We do wish to use serial number tracking on Sales Order Packages that are sent out to customers though. 

Has anyone found a realistic workaround to either import the serial numbers that we receive through a purchase order or, better yet, list serial numbers on a Sales Order without first having to track the serial number in the inventory item? Even skipping the manually scanning of serial numbers for an import is not ideal because as soon as those devices get to our main warehouse, we divy them up and send them out to all of our other warehouses. Unless there is a way to group serial numbers for transfer, it seems like we would still wind up having to pick through our serial numbers one by one on a transfer request.

Let me know if I have missed anything in this assessment, any help would be greatly appreciated!!

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