Station selction

I have encountered a couple of problems on how the system deals with stations selections.

1. I select a channel with station number 1101 for example. I then select last viewed and the station I just selected  is displayed as a different number such as 842. I want it to keep the 1101 and not have the system  "adjust" to 842. 

2. There are a total of 10 previously viewed channels possible. If I select an 11th channel, in the past it would take the channel I just selected and replace one of the existing "last viewed" channels. Probably a less used channel. It no longer does that. If there are ten stations in the "last viewed" no more are added nor replaced. I'd like to have the system do that again. 

 I have attempted to sign off and reestablish the channels but there was no change. I'd hate to delete the current version of the streaming selection and set it up again.