Switching Activities Powers Off Devices

I have set up all my devices and activities on my X1 remote and have everything working just the way I like. I have noticed, however, that when I switch from one activity to another it turns off certain devices that I still need on. For example, when I switch from Smart TV to Cable TV I still need my TV, soundbar, and receiver on, but it powers off my receiver and soundbar. Oddly, the TV stays powered up, but I need the other devices to stay powered on until I hit the "Off" button.