Hi Srikanth
Just check these settings in V_THVNAVFLDGRP and provide Hierarchy Name: MSSBIZVIEW and Structure Name: MSS_TMV_BIZ_ORG. Make sure that u have flagged "Is selected" check box. as it Determines if the entity is selected as a default entry while building the hierarchy.
and also in the same table check with the Hierarchy name: MSSBIZVIEW and Structure name: MSS_EMP_HIER with Navigation field group : MSS_TMV_BIZ_EOR.
and the rest of things I did the same as u have mentioned in ur answer. I've activated the switch for Hierarchy Visualization in customer table V_THV_APP_C& run'd the report RP_CHECK_LAUNCHPAD_ENTRIES with Hierarchy MSSBIZVIEW & logged into portal once again.
Try this & let me know the possible outcomes
Cheers
Pradyp