Comment 2 for bug 1204190

The proper place to get the instance ID is from GoalState.1.xml.

cat GoalState.1.xml
<?xml version="1.0" encoding="utf-8"?>
<GoalState xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="goalstate10.xsd">
  ...
  <Container>
    <ContainerId>fb3c8d4d-5087-4878-9e71-472119b5750c</ContainerId>
    <RoleInstanceList>
      <RoleInstance>
        <InstanceId>8391407e1edc4dd095dae486073ad2b2.utl-0723-ci4a</InstanceId>
        <State>Started</State>
        <Configuration>
        ...
        </Configuration>
      </RoleInstance>
    </RoleInstanceList>
  </Container>

The InstanceID value corresponds to the deployment ID.