I am totally guessing, but as an assist or auto, it's a lower margin knife with higher QC needs, and is sellable in a fewer markets. It's also of an aesthetic that isn't really popular right now. They gave it a shot, but it doesn't scream "Buck" besides the logo, and I'm not sure who it's for. So some combo of those factors is probably why they are moving on to something else. I'd also bet that the market isn't great right now for knives in that category, the Auto market is very limited and has massive competition. They look just okay, but that's a steep price for "maybe?".
I could be totally wrong, but that's my guess.