Hi Ben,
You can go through below article for OIR related knowledge:
https://support.ptc.com/appserver/cs/view/solution.jsp?n=CS172537
You will also found several KB articles for Workflow & Lifecycle too. Below are couple of them:
https://support.ptc.com/appserver/cs/view/solution.jsp?n=CS153902
https://support.ptc.com/appserver/cs/view/solution.jsp?n=CS63595
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Thanks,
Shirish