When you participate in a challenge with an activity badge included it will automatically get assigned to your first qualifying activity. If you later on want to improve your badge result you can do so easily following these steps.
- Open the activity details page of the current activity which is used for the badge
- Click the Connect button in the header and unselect all challenges that activity is connected with
- Now open the activity details page of the new activity which you want to use instead
- Click the Connect button again and now select the challenge you want to use it
- Click Connect to save the changes and wait a few seconds for the system to process the changes