Found my answer for this:
Why does my digital TV show channels with decimals or dashes?
On a digital cable television system, the “physical” channel numbers have decimals or
dashes. However, some systems are designed to also provide “virtual” channel numbers
(VCNs) that present the channel as a digit whole number. Unfortunately, different
model digital TVs have different types of channel tuners and not all tuners can pick up
If you have a digital HDTV that will not recognize the whole number virtual channel
after a channel scan, be sure to check the settings in the set-up menu – including setting
the clock if your TV has one. If this does not work, your TV tuner is probably not
capable of presenting the virtual channels.