Upgrade issue - 12.5.658 to 12.6.005

Upgrade issue - 12.5.658 to 12.6.005

Hello Team, 

I am upgrading my simulation environment from 12.5.658  to 12.6.005. this env had 1 central server and 1 probe. We successful upgrade from central server but for probe server we failed with error : "ERROR :: Previous Patch Failed and Configurations were not Restored properly" 

We are doing the same step as central server but not sure why its success in central server but failed in probe server. DB back up was success on both server before perform the upgrade. 

Central server - DB = MSSQL
Probe server - DB = pgSQL

Anyone facing similar issue before? any idea what workaround needed to resolve this? 

Thanks in advance. 

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