Hello John,
Thanks for your reply. The payment module name in Hostbill is "PayPalWebPro", in WHMCS it is "paypalpaymentspro". If I change the name in Hostbill from "PayPalWebPro" to "paypalpaymentspro", would it affect the functions for Hostbill? I just want to import a few accounts to test before switching everything to WHMCS, does not want it breaks Hostbill.
If this import tool is for importing from old billing system to WHMCS, I would assume WHMCS would accommodate anything that doesn't match and fix it instead of letting user to modify on old billing system. Is "PayPal Website Payments Pro" not a common payment gateway?