Hello,
In the current version, if you have a discount on an order with just one product in it ; HikaSubscription will use the order price for the recurring.
If you have more products in the order, HikaSubscription process the recurring price by the price of the concerned products. If you have a discount applied directly on the product, the discount will be applied too.
Depending your needs, we can think about improvements for the discount management in HikaSubscription.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.