Hello,
A few of the channels I can receive broadcast incorrect data. (Eg satellite data where nid is not unique across the whole satellite. I also have a terrestrial channel that does not broadcast the correct frequency).
What I do in this situation is use rid. There is one problem: Even with rid!=0, the channel will still be updated by vdr. So, to fix the channel I have to have two versions.
The first with rid=0 which vdr updates and installs the incorrect data. The second has rid=1 which vdr leaves alone.
Now: given that rid!=0 will never be set by a scan, I think it would be better if vdr just left all rid!=0 channels alone. This way rid could indicate "don't auto update". This behaviour would not affect the other use of rid.
Now, I know some people are going to say "get the broadcasters to fix it"..., but I don't think that is a reason not to make this change.