Update Manager Base Line export and Import

Hi,

We are upgrading vSphere Infrastructure from 5.1 to 6.0, part of which we have fresh installed the 6.0 VUM and vCenters. But the issue is how do we take (export) all the existing baselines which are created in 5.x update manager. We followed below link however it is not working.

https://pubs.vmware.com/vsphere-51/index.jsp?topic=%2Fcom.vmware.vsphere.update_manager.doc%2FGUID-FB9C8381-9D6C-4451-8CCF-99A14B552D59.html

Note: Customer has many custom baseline created for specific packages/plugins/software and want us to export those and import in new 6.x infra.

Regards,

Ravindra