Missing CN Logo (2017)

Filmed October 2017
The logo seems to have disappeared from the side of this engine (CN 2020). What's up with that? Where did it go?
I found some pictures of this engine on railpictures.net, some taken not too long before this video, and they show "CN" on the side, as it should be. But maybe that was the other side?
One possibility is it's being sold to another railroad, but then why leave the logo on the front and back? (and maybe the other side?)

[@NorthernAlbertaRailfanner]

You Know 2020 Is Bad When A CN Engine Numbered "2020" Has No Logo.

[@BNSF_7777_Productions]

I would say it’s a leased unit bought from CN, but the CN logo is on the back and that is a running number for their C40-8 SC, so I don’t know why that exists

[@PC10.8]

Wow that is very odd. Awesome catch with that BC rail locomotive too!

[@Made_by_Man]

Very good video!