PO Workflow: Event Releasestep created

Hi All,

We have Purchase Order workflow which is triggered whenever release strategy gets applied to a PO.

The workflow is triggering via BUS202-ReleaseStepCreated event.

The workflow is supposed to trigger even when a PO is changed.

Which event should be triggered when a PO for whom a release strategy is applicable is changed ?

Should the BUS202-ReleaseStepCreated event re-trigger ?

Or I will have to user BUS2012-Change event to re-trigger workflow for changed POs.

Does event BUS202-ReleaseStepCreated trigger only when a PO is created ?

Thanks,

Sameer Tapre