Hi Soni,
Yes, even if documentation only mention 12.5x to 12.8, the upgrade of
the Policy Store data is still needed from 12.7 to 12.8 :
Upgrade Policy Store
https://techdocs.broadcom.com/us/en/symantec-security-software/identity-security/siteminder/12-8/upgrading/in-place-upgrade/upgrade-policy-store.html
There are differences in the Policy Store objects as the latest
12.8SP5 Policy Server brings new functionalities and further
configurations as OIDC, JWT and others.
To upgrade Policy Store data, we strongly suggest you to do it
manually as per documentation here :
Upgrade Policy Store
https://techdocs.broadcom.com/us/en/symantec-security-software/identity-security/siteminder/12-8/upgrading/in-place-upgrade/upgrade-policy-store.html
More, you might consider to import also objects from
default-fedobjects-config.xml :
Import the Federation Policy Store Objects
https://techdocs.broadcom.com/us/en/symantec-security-software/identity-security/siteminder/12-8/upgrading/in-place-upgrade/upgrade-policy-store.html
These operations won't overwrite the existing data, except when
running XPSSweeper, data might be corrected if needed. It's also a
good idea to re-index the store to insure that the data are fully
indexed after operations.
Before executing your upgrade procedure in Production, we advise you
to test it in lower environment to help you to identify specificities
from your environment and bring adjustments.
I hope this helps,
Best Regards,
Patrick