I just realized that prices are still being retrieved for many obsolete investments in my portfolio (i.e., I no longer have positions in them and have no plan to open new ones, so I don't need the price history).
Is there any easy way to find and disable price retrieval for such investments? Or do I have to open the properties (in the portfolio editor) of every investment I have ever held, go to the Internet Retrieve tab of each, and uncheck Retrieve Price if it is set?