How to redirect old folders to main through 301 htaccess

Question

I am trying to redirect old folders completely to the root of the q2a installation.

before I had on http://www.yourquestionplease.com an drupal installation used as qa site.

Now there are links in google like:

http://www.yourquestionplease.com/content/when-do-hurricanes-occur

This I want to redirect to

http://www.yourquestionplease.com

I added to the .htacces

the following redirect:

RedirectMatch 301 content/(.*) http://www.yourquestionplease.com/

but the result is a redirect to

http://www.yourquestionplease.com/?qa-rewrite=content/when-do-hurricanes-occur

there I have the ?qa-rewrite....  part, which I want to avoid to make it not double content for SE.

Does anybody know how to do that ?