User defined repositories do not persist

The installed Maintenance Tool's ability to define user defined repositories does not function properly. After defining a repository, testing and closing the Maintenance Tool, the repositories do not persist.

Steps to Replicate

1. Install an application though the Qt Installer Framework so a Maintenance Tool is created
2. Navigate to the newly created Maintenance Tool
3. Open the Maintenance Tool and click "Settings"
4. Under "Repositories" and under "User defined repositories" add a valid repository
5. Test the repository and ensure it works
6. Click Ok
7. Click Quit
8. Reopen Maintenance Tool
9. Click Settings
10. Under "Repositories" and under "User defined repositories" observe previously defined repository is now gone <------- BUG

Other details

• My Maintenance Tool is running under 

  C:\Program Files\<company>\<app>

• Windows admin permission prompt did show after quitting Maintenance Tool