When transmission-daemon settings won't update

The transmission-daemon wiki instructs users to edit settings.json at

$HOME/.config/transmission-daemon

But you may find that editing that file has no effect on your daemon. In such cases, you might want to try the following:
1. Stop the daemon (sudo may be required)

/etc/init.d/transmission-daemon stop

2. Edit the settings.json file found at:

/etc/transmission-daemon/settings.json

3. Restart the daemon

/etc/init.d/transmission-daemon stop

If that doesn't work, you may want to look for the settings file here as well:

/var/lib/transmission-daemon/info

This solution by elico of the Ubuntu Forums ended hours of frustration caused by useless edits to the settings.json file in my home directory. I hope you find it helpful as well.