Just because a metric template has a metric disabled doesn't imply that metric is not turned on for some resource, but this change may prevent accidentally creating alert templates on metrics which really have been turned off deliberately. At worst this will help indicate that the alert template will not be effective for any new resources imported.
This bug was previously known as http://jira.rhq-project.org/browse/RHQ-1419
mass add of key word FutureFeature to help track