BonkTastic
ಠ_ಠ
Cap Friendly says that Harpur is projected to be "waiver exempt" next year:
Ben Harpur Waivers Calculator - CapFriendly - NHL Salary Caps
Being "waiver exempt" has nothing to do with whether or not your contract is one-way or two-way. You are confusing real-life NHL processes with video game rules that simplify contracts within the game for easier gameplay.
The only thing a one-way contract means is that you get paid the same amount regardless of where you play (AHL or NHL). Being waiver exempt means you don't have to pass through waivers to be sent down to the minors.
Harpur will be waiver exempt on a one-way contract next season, which means we can send him down to the AHL without him having to pass through waivers first, and if we send him down we still have to pay him his $650k NHL salary.