This is crap.
Even more, because LAN sent a targeted e-mail to elites, that roughly says "because you fly on Premium Business so often, you're going to love getting 150% earnings", not mentioning the lowering to 75% of the V bucket.
I fly PB about 25% of the time on paid tickets, but the other 75% is with UPGs via KMS or coupons.
Shame on you LAN... once again...