Issue During Windchill Upgrade

Hi Everyone,

I've started Upgrade Windchill PDMLink from 10.1 to 11. I'm facing issue during Upgrade at Execute Standalone Migrators activity. I'm getting below error...

(wt.org.orgResource/54) wt.org.OrganizationServicesException: Cannot process participant xyz because a related disconnected participant wt.org.WTOrganization:374 exists in the database

Here Source system is rehosted one for which domain name has been changed.

Any suggestions will be really helpful to me.

Regards,

Krishna