Symptoms
Is this possible to change a process escalation date after the process has started? The date is set via a data field. However changing the data field doesn't seem to have an effect on the escalation. So the process escalated on the original date. Is there a way around this?
Diagnoses
In order for changes to take place the process has to be redeployed and a new instance has to be started.
Resolution
Changes cannot be applied after the process has started. Please note that escalations get scheduled when the instance hits that step. So, an Activity-level Escalation gets scheduled when that Activity Instance starts. Similarly, an Event-level Escalation gets scheduled with the Event Instance starts. This means that without re-instantiating the instance, there is no way to change the escalation schedule.