Resource Manager ID is deleted on each import

Document ID : KB000123167
Last Modified Date : 19/12/2018
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Introduction:
After an import process, when resources are imported, their Manager IDs are deleted.
Question:
Why are the Manager IDs of resources deleted after an import is run?
Environment:
Identity Manager 14.x
Answer:
This is due to the property of correlation.fixRoleResourceOwner.enabled which should be set to false in order to prevent it from happening.