To make 6.0 host profiles to 7.0 Upgrade compatible:
Use Recommended Host Profiles Upgrade workflows from https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere/7-0/host-profiles-7-0/recommended-host-profiles-upgrade-workflows.html
To make host profiles to 6.7 Upgrade compatible:
Upgrade the Host profile using following environment:
All host profile settings are applied.
Note: There are some changed parameters for the host profile policy. For more information, see Answer File Field and Host Profile Extraction.
Result: If hosts are in maintenance mode then follow the below steps.
NOTE - If the unsupported Host profile is not being used anymore, it may be deleted from the vCenter