Skip Cost Basis Method pop-up?

I have recently gotten ahold of about 10 years worth of transactions (about 12,000 total) associated with three investment accounts of mine. I have been working on importing them into my Quicken file, and I seemed to have worked through most of the problems, but I can't figure out how to get Quicken to skip Cost Basis Method window for each of the partial sale transactions. I would particularly like to avoid clicking "OK" several hundred times for the sales of my money market securities. Any one have any tips?