Search Engine Watch Forums moderator Discovery reports that updating match types in Microsoft's MSN adCenter is now easier. Discovery details the new simplified process;
Select your campaign
Click "manage keywords" button
Wait a moment of your current keywords to fully load into the right window.
Check the check box of the keywords you want to work with
Now at the top of the keyword window select "Match Option" and select "show match types"
The Keyword window will now display a column for each match type option along with a check box to toggle on or off the match option for each keyword.
Forum discussion at Search Engine Watch Forums.