Quicken lost online security match

I had some Scudder US Gov bond, KUSAX, fund in mom's acct. Also had similar Franklin and Putnam funds. The Scudder was taken over by DWS, causing a name change. Quicken decided to rematch the KUSAX with the Franklin shares - but this only happens when Q checks portfolio, so while it correctly lists the two items separately in Portfolio Summary, it adds the two together on the download portfolio check, and complains about the error and wants me to correct the error by adding a dummy transaction to remove the DWS shares and add them to the Franklin shares. I tried to uncheck the Matched with online security box, and re-download. That did not change anything, but now I can't recheck the box. Help!!!!