Ebay sales into quickbooks

A lot of our sales are from Ebay.  At the first of the month, we download an IIF file from Paypal (which has all of the transactions from Ebay) into quickbooks.  How do you get your inventory automatically adjusted for the items purchased?  When you run a P&L and expand the Purchases for Resale account, it does not show any deduction in inventory for what was sold on Ebay.  What shows up on the P&L is a negative number in the Cost of Goods Sold-Other.   Do we have to enter each Ebay transaction manually as a sales receipt?  For the sales that I make to a store that carries my products, when I enter a sales receipt with the items from the inventory list it all shows up correctly on the P&L.  I was hoping to automate the process with the Ebay/Paypal sales.

Thanks,

Dave