By setting a business card to be a different person, you can undo the results of recognition as same person. Here we will show how to do this.
1. From the business card list screen, click on "Candidates for Recognition As Same Person".
2. Put a check in "Display including cards already recognized as the same person".
3. Click on the name of the person you would like to undo, and then click on "Set as different person".
How views change before and after setting cards to the same person
 is used for cards before recognition, and  is used for cards after recognition.