QUOTE(Lego Warfare @ Mar 1 2017, 04:30 PM)
Currently have 650k treatpoints which probably equals to 76.4k KF or 87.6k AM points.
If I'm interested in using the points for upgrading from Y to J class to Europe, what would be the most efficient strategic cost saving way to do it?
Why more Asia Miles than Krisflyer? I'm assuming these aren't Maybank Premiere TP?
Upgrading from Y requires you to buy from Y, B, H, K or M fare classes, ie. the more expensive fare classes. Just pulling numbers out of thing air, your options for KL to London might be:
a. RM3k on MH, QR etc
b. RM6-10k for an upgradeable economy fare on CX + 60k for a return J upgrade
c. 120k AM + fees for a full J award redemption
When I poked around ITA matrix, the price for a B fare class KL to London on CX is closer to RM13k which is why I almost always recommend against upgrading using miles, unless someone else is paying the for the flight ticket.
Spend more money, get more points

Now if you can position yourself in Europe one way for cheap, you definitely have the option of doing a one way return in J. AM or KF.