WO from a Sales Order

Hi,

By mistake, while uploading the open sales orders we have created sales orders with W line type and which has inturn created Work Orders.

As we have a stock therefore we donot need a WO.

Should I cancel the WO?But If I cancel the WO,the status of the sales order get stuck because the setup is in such a way that logically when we complete the WO,the status of the Sales orders gets updated.

Should I complete the WO but this may increase the stock valuation?

Thanks