Map OLD user account details with new user account which has same email ID

[haripriya5]

The old & new user account will have same Email ID & user name , different GUID. Is it possible to map these user accounts so that user can still be able to see the old data ( requests raised ) using the new GUID when logged in using SSO. 

Can someone  help us how can we achieve to get this done .

Ex: if we have reference field mapped in the new user table , can it help ?

[Mark Manders]

How do they log in? If that's still through the same login, they will still see their own data? They created it with their user id and if the user id is not the GUID, it should be fine. Otherwise you will need to create a script replacing all of the old 'opened_by/requested_for'-fields with the new user id's. Your 'is dynamic me' will not work if ServiceNow doesn't recognize you as the same user. 
If it's just another way of recognizing through SSO, you won't have any issues.

[haripriyarg27]

Thank you Mark for your response ! 

Any other possible way that we can achieve this .  Now we have changed the SSO property that has the email ID instead of GUID. One would be deactivated. 

Any suggestions pls 

[Mark Manders · Accepted solution]

But they are still the same users, record wise? They are still having the same sysID in the system? Or were all new user records created? If that's the case, you will need to map them so the old ones are seen in relation to the new ones and fix all logic related to what they can see.