[mythtv-users] is (clearqam) channel scanning idempotent?

[Eric Sharkey]

On Wed, Aug 3, 2011 at 7:59 AM, Brian J. Murrell <brian at interlinx.bc.ca> wrote:
> I don't know about the greater community of cable providers, but mine
> typically, when they move a channel, the program id stays the same and
> they just move it to another channel.

I've had both Comcast and Verizon, and that has not been the pattern
with either provider.  At least not in my area.

> So, if I wanted to re-scan but wanted to ensure I had all of the
> information I needed to restore things to the pre-scan state, is the
> channel table the only table I need to take a dump of?

Yes, as far as I know.

>  Even without any
> mistakes, given that I can use the progid of the digital channel to
> identify moves having that information after the re-scan would probably
> make my life easier anyway.

Absolutely.  Count yourself lucky in that respect.

Eric