Tvheadend

Hello

I'm having an issue with frequency updates. When a channel updates tvheadend will store the old frequency, and when I go to playback that channel it will try using the old frequency, this is causing 10-15 second zap times with certain channels which have updated, because i guess it tries to open each frequency until it hit updated one. From what I can gather so far, if I manually remove the old frequency then save, the channel will open straight away. Is there a way to automatically remove the old frequency once a channel has updated?

The above brings me on to the second issue I'm having. If a channel happens to change it's name for a period of time, for example Sky Sports 2 changed to Sky World Cup, but now even though the broadcaster have reverted it back to Sky Sports 2, my tvheadend still says Sky World Cup, and I now have a new channel named Sky Sports 2 which is numbered 0, so I have to manually edit it back to the correct number, and delete the World Cup channel.

Also, is there a way to auto map newly scanned channels? I've only just realized after a few months that I have a number of channels which have obviously been scanned in the background, but they haven't been mapped.