Ability to switch billing mode

Currently in HC7, there is no direct way to switch a customer's billing mode within the same plan. For example, swithing the customer from monthly billing to annual billing. Unless you add WHMCS integration functionality, it would be nice if you would consider that.

ah, yes I totally agree that there should be a way to switch billing type of existing sold plan. Even though HC provide WHMCS this option should be included in HC billing system too.