Whats the exact version of SEPM you are running?
do you see this on your SEPM as well?
Client online status is not reflected correctly after restoration of embedded database
Fix ID: 2620816/2612223/2659915/2710490
Symptom: After an embedded database is restored from backup, the client online status is not reflected properly in the SEPM console. The SEPM logs may also contain the messages:
1) Assertion failed: 200114
2) Can't find values for row <ID> in index 'I_SEM_AGENT_COMPUTER_ID_PLUS'
3) java.sql.SQLException: [Sybase][ODBC Driver][SQL Anywhere]Unable to find in index 'I_SEM_AGENT_COMPUTER_ID_PLUS' for table 'SEM_AGENT'
Solution: The SEPM database restore function was updated to properly rebuild indices of databases that were created or migrated from SEP 11.0.
http://www.symantec.com/business/support/index?page=content&id=TECH187656