Description of problem:
Platform issue for https://issues.jboss.org/browse/DROOLS-1089

Version-Release number of selected component (if applicable):

How reproducible:
Always

Steps to Reproduce:
1. Create a process with multiple BusinessRulesTask
2. Create related rules where the LHS constraint evaluates the existence of an object (eg. $p : Person())
3. Objects are passed into the BusinessRulesTask using the Input/Output mapping

Actual results:
Some rules are not fired

Expected results:
All rules are fired

Additional info: