Aeroplan has a transfer promotion where you can transfer from partners like Starwood, Hertz, Hilton, etc and as long as the total Aeroplan miles deposited from all of them reaches one of the bonus thresholds you will be awarded the respective bonus miles.

aeroplan-bonus

Bonus offer valid only on conversions made between July 27, 2015 and August 24, 2015 (11:59 EDT).

Maximum 40,000 Bonus Aeroplan Miles can be earned per Aeroplan Member. Bonus Aeroplan Miles will be issued by Aeroplan as follows: 1,000 Bonus Aeroplan Miles will be deposited into the member’s account when the total Aeroplan Miles earned by converting points from any combination of eligible partner programs during the promotion is between 5,000 and 9,999 Aeroplan Miles; OR 2,000 Bonus Aeroplan Miles will be deposited into the member’s account when the total Aeroplan Miles earned by converting points from any combination of eligible partner programs during the promotion is between 10,000 and 19,999 Aeroplan Miles; OR 4,000 Bonus Aeroplan Miles will be deposited into the member’s account when the total Aeroplan Miles earned by converting points from any combination of eligible partner programs during the promotion is between 20,000 and 49,999 Aeroplan Miles; OR 10,000 Bonus Aeroplan Miles will be deposited into the member’s account when the total Aeroplan Miles earned by converting points from any combination of eligible partner programs during the promotion is between 50,000 and 99,999 Aeroplan Miles; OR 25,000 Bonus Aeroplan Miles will be deposited into the member’s account when the total Aeroplan Miles earned by converting points from any combination of eligible partner programs during the promotion is between 100,000 and 149,999 Aeroplan Miles; OR 40,000 Bonus Aeroplan Miles will be deposited into the member’s account when the total Aeroplan Miles earned by converting points from any combination of eligible partner programs during the promotion is 150,000 Aeroplan Miles and more.

Conversion of Membership Rewards® points from American Express Cardmember accounts into Aeroplan Miles are not eligible for this promotion. Although eligible CIBC Aventura cardholders as of October 1, 2013, can convert their Aventura points to Aeroplan Miles, these conversions are also not eligible for this promotion.

Here is a link to the promotion.