As usual I'm last to know but no rescan is needed for my use of CHCH.
It is coming in for me at a consistent 60% strength or better.
No interference with WUTV, I still have the odd phenomena of WNED not coming in on the outdoor antennae, just on the indoor antennae.

Since mine is computer-based I kept the old entry for SUN-HD in the main channel file, so all I have to do is edit that to CHCH-HD and delete/move the old rf11 and rf18 off the "Favourites" menu and move the previous SUN entry into the "Favourites" menu.

At last I can again get news from my own 'backyard' because the other three I watch are too Toronto-centred.  CFTO is still hit and miss at my location.

Haven't seen ION in ages though MyTV is always prone to Nature's whims. AML.

Per the comment on "60 Minutes", when football or golf ruins the recording I can get it either from going to the CBS sub-site or plucking an .avi, .mp4 or .mkv off the 'net, and its' quicker because there are no commercials in those forms. CBS somehow stopped blocking for those outside the US but usually after a one or more days' wait, to view at their site.