Try an inventory sync from vRLCM for vIDM.
Login to the tenant vIDM ( https://tenant01.ajay.local/SAAS/login/ in my case) and sync the directory again.
Ex:- https://idm8.ajay.local/ >>VIDM FQDN
Master-tenant >> master-tenant
Tenants > tenant01 and tenant02
https://tenant01.ajay.local/SAAS/login/