https://www.aeroplan.com/whats_new/n...068_2018_09_26

As of October 3, 2018 please note the following accrual structure change for Brussels Airlines;

Effective for travel October 3, 2018, booking class G will no longer be eligible for accumulation. For travel until October 2, 2018, earn 50%.

Effective for travel October 3, 2018, earn 50% in new booking class O.

To learn more consult the Brussels Airlines accumulation structure right now.