OK - tried that - customer file set SIP account to "no", IAX to "yes", and then deleted the SIP friend. Result is "There is no SIP / IAX number that matches"
a2billing.php|5|: line:722 - SELECT name FROM cc_iax_buddies, cc_card WHERE cc_iax_buddies.name=cc_card.username AND useralias='815615438138'
a2billing.php|5|: line:724 - 0
a2billing.php|5|: line:731 - SELECT name FROM cc_sip_buddies, cc_card WHERE cc_sip_buddies.name=cc_card.username AND useralias='815615438138'
a2billing.php|5|: line:733 - 0
Well then any normal person would look at their sql and make sure it does exist. Then an IDIOT say's ... Oh - used my own account that I messed with and hard coded things on, so it was in conf, not in the SQL. So let me reconfirm.
CONFIRMED - everything works how it is supposed to.