Looking at the list of channels at
EKB: Dish Network Channel Chart (Unofficial) , all of the channels you listed are on Sat 110.
On most, if not all receivers, when you go to the Dish Point screen to check signal strength, it will show the Sat/TP/Strength for whatever channel you had just been looking it. That is the reason for reverting back to a different Transponder.
If your system was setup and peaked to both 119 & 110, using LNBF and/or switches, you will be able to change satellites in the menu and get readings for both. If not, then it may give you readings for 110, but tell you wrong satellite found.
Even though you said that you brought up 110 & 119, it appears that you were actually only receiving Sat 110.
I don't know if your single LNBF is a Single or Dual LNBF for a Single satellite location, or if it is a Twin which is used for Two satellite locations. The Single and Dual but have a single Eye with either one or two outputs. The Twin has 2 Eyes to see 2 sat locations.
If your Dish Network subscription is only for Local (Denver) Channels, then you will get all but Channel 2/KWGN using a 18" dish set for 110.
To get all of the standard definition Local Denver Channels, you should have a Dish 500 with a Twin LNBF.
I believe the Model 2700 is a Legacy Receiver. Therefore, it is not forward compatible with a DishPro LNBF,
so you would need a Dish 500 with a Legacy Twin LNBF to receive both 119 & 110 without having to re-adjust/re-peak the dish each time you wanted a different satellite.
Dish has been known to move channels around from one TP to another, and also move locals from one satellite to another, but not that often. Except for discontinuing one channel awhile back, I think the Local Denver Channels have been in the same place for at least a year. In either case, your receiver should not have any problems finding the channels if it is pointed to the correct satellite.
And of course, if you are out of the Spotbeam's coverage area, you will not pick up those channels.
Check Switch --- It does not hurt to do a check switch. You may get an error message saying no switch found or something like that.