As I am living in an area which is not officially supported by Channels = Austria, it is still mainly working BUT, and here is the thing: I do not find a proper guide data source which covers all changes. Hence, following feature request, which I do also know from EyeTV:
A possibility would be great where you can manually “assign” the right channel from gracenote to the channels in HDHomeRun. This works perfectly fine with EyeTV and ensures that the right source is assigned to the right channel.