I would implore anyone still risking seizures to avoid the Western terminal at all costs, and avoid getting shipments direct from knife/sporting good retailers.
Vancouver/Richmond appears to be the most strict about checking on international inbounds, and all my woes regarding knives reside there. I've had great fortune taking a little extra precaution, using a little extra communication w/ secondary market sellers and paying a little extra to route things where I want them.
Secondly, use a proxy if you're buying from a retailer. Have it shipped to a friendly party south of our border on the east side to ensure things go through the Eastern terminal. Discuss w/ your proxy about taking the knife down to individual components, shipping in separate packages and using vague (BUT STILL ACCURATE) language on the contents description. Things like knife, cutlery, kitchen/camp tool are completely out of the question at this point and are almost a surefire way to get your stuff taken away. Marking things as a "gift" with a low declared value heavily increases your chances of things passing through. Alternatively, using terminology like "spare parts" for disassembled knives is completely accurate and also seems to yield a high success rate.
I had one blade seized and changed my process completely to reflect the above. I have not yet used multiple parcels to get a knife across, I just have my proxy disassemble and mark as a gift. No matter what you do, you still run the risk. Unfortunately it's a risk many of us are still willing to take because of the insane price markup many of our retailers have/have had to implement due to the difficulty in getting these products across. Not to mention the US market is much more saturated with hard to find models, midtechs, customs.
Happy hunting and good luck!