Does Test Scenario delete it's fact objects automatically after running tests?

Issue

• Take an example of this simple rule.

package com.sample;

rule "FirstRule"
dialect "mvel"
when    
then
        Incoming fact1 = new Incoming();
        fact1.setKey(1);
        fact1.setTypeIn("Call");
        insert(fact1);
        Incoming fact1 = new Incoming();
        fact2.setKey(2);
        fact2.setTypeOut("Data");
        insert(fact2);
end

Running a Test Scenario from BRMS 6.1 Business Central UI based on this rule with inserted facts works fine. The scenario just checks that the rule is executed and 2 new objects of Incoming fact are created. The scenario runs good but looking at the Audit Log of the Test Scenario it shows following chain of events.

==>[ActivationCreatedEvent: getActivation()=[[ FirstRule active=false ] [ [fact 0:0:1334980084:1306428912:0:DEFAULT:NON_TRAIT:org.drools.core.reteoo.InitialFactImpl@4dde85f0] ] ], getKnowledgeRuntime()=org.drools.core.impl.StatefulKnowledgeSessionImpl@4c3ae0d8]

Fact com.sample.Incoming inserted in rule FirstRule. Fact[ com.sample.Incoming@18f58cfd ].

Fact com.sample.Incoming inserted in rule FirstRule. Fact[ com.sample.Incoming@2d7fac01 ].

Object com.sample.Incoming deleted. Fact[ com.sample.Incoming@2d7fac01 ].

Rule [Rule name=FirstRule, agendaGroup=MAIN, salience=0, no-loop=false] fired.

Object com.sample.Incoming deleted. Fact[ com.sample.Incoming@18f58cfd ].

• Why does it show the following rows related to deletion of fact objects ?

Object com.sample.Incoming deleted. Fact[ com.sample.Incoming@2d7fac01 ].

Object com.sample.Incoming deleted. Fact[ com.sample.Incoming@18f58cfd ].

• The rule does not delete any objects. Does the Test Scenario clean the memory after running the test? Isn't it a new stateful KieSession created every time users run the test?

• Also, why doesn't the log appear in a logical order inside the Audit Log ?