It's happening on any route i try, i've never managed to price a ONE fare, it will only price GLOBs.
Even a simple NRT-SIN-SYD-LAX-JFK-NRT all on OW carriers will price as a glob. I'm very new to sabre, and am just using WPRW(YEN)AJL or whichever carrier.
I suspect there is a better command to use to try to force ONE pricing but am not certain.

If I create a route that satisfies ONE but not GLOB rules (i.e. too long) pricing just fails again.