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    Type:Sub-task 
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    Resolution: Done
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    Priority:L3 - Default 
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    Affects Version/s: 3.0.0
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    Component/s: backend
Context:
To decouple the event import from the engine import config we should introduce dedicated configuration parameters for it.
AT:
- Remove Global Feature Flag (eventBasedProcess.enabled) and instead add
	- camunda activity event import switch per optimize instance (per engine)
- Add Operational Feature Flag for Event Based Process Instance Import (processing of published event processes)
 
- the configuration documentation is updated accordingly
- the event based process technical documentation is updated accordingly
- the clustering documentation is updated to reflect event based import setup