Why has Cubase forgotten my key commands?

I haven’t changed them. I haven’t updated in a year. I haven’t been fooling around in any preferences folder. I haven’t installed anything new.
I’ve been using the same template file to start all of my projects for about 6 months.

Why are my (user defined) key commands gone today? How can they just vanish?

Luckily I had a few saved presets for these from making templates and could recover, but otherwise I’m quite displeased with this behavior.
I was using the same template over and over without changing anything on it and one day -blip- I open it and commands aren’t working.
I tried opening older files, ones over the past 6 months that I had certainly made with my own key commands involved, but they were not functional.