I think the key is the "stationId" setting inside the "channel" JSON. If you are just changing the channel number and callSign that won't work. In your examples above, note the "stationId" is different. So the challenge would be to find the corresponding stationId for each channel which you would have to update along with the other info. You may be able to use kmttg "Guide" tab for each relevant channel and look at JSON info for a table entry for each channel to get that information (using the 'j' bindkey in kmttg).