Duplicate hubs in same domain- for single controller and both are active

Document ID : KB000097765
Last Modified Date : 23/05/2018
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Duplicate hubs are showing in production domain for the same controller.  One hub appears with the full hub name and the other hub appears as the robot name.
How do we resolve this issue where we have duplicate hubs appearing for the same controller?
UIM 8.51
hub 7.x
robot 7.x
Corrupted security file on the hub caused this issue.  Deleted the security.dta file on this hub and when new security files were pushed from another hub to the problematic one, the problem was resolved.