littleoak
Verified User
Boy does that sound impressive.I control DA and WHMCS. They do not control me.
In all seriousness, this is a bad idea. There should always be a separation between billing data and a hosting account. If one account gets compromised it should not lead to the other account being likewise compromised.
The developer of WHMCS is fairly receptive. I suspect that he would be willing to program this at minimal cost if you contact him directly.