This is a pure UI / User Experience improvement.

When editing a source, add a button to "Force Refresh" the list of Source Names

To check before implementation :
Is this really necessary ?
This might not be necessary depending how often we actually do that check.

• If that "look for new source" check is done "every X seconds" while the source setings are open > this is not needed. (and we should outline this in the Documentation)
• If there is only a check for new source when opening the source setting windows > then either implement a constant check or the "force refresh" button.

Feedback is welcome.