Question about Pro Sites Bulk Upgrade Module and WHMCS

Hi all, i use WHMCS provisioning module to create the blogs, can i still use Pro sites Bulk Upgrades module to users have this option to purchase more blogs?
Lets suppose a user will purchase bulk upgrades, does it will update the data within WHMCS client account?
I have some doubts because i use provisioning module and the only way to users update or upgrade their blogs is through the WHMCS user account.

Can i use this feature of pro sites or i have to create an extra product through WHMCS?

Thank you