Steps to reproduce:
1. Make sure you have events without workflows in your system, for instance, delete the workflows associated to a finished event
2. Rebuild the index by issuing a POST call to <admin_server>/admin-ng/index/recreateIndex
The events are incorrectly shown as "Scheduled"
The events should be listed as "Processed", just like before
Workaround (if any):
One could have a dummy workflow that produces non effect in the MP at all, but would mark the event as "Processed" again.