Sorry it took so long to get back, as I was running some tests on this issue. I was able to solve my problem by doing the following in my process event listener:
public void afterNodeTriggered(ProcessNodeTriggeredEvent event) {
ksession.fireAllRules();
}
This advances the process when a business rule task is encountered. This post pointed me in the right direction towards calling fireAllRules():
https://community.jboss.org/message/627263
And thanks for replying Demian