Should I simply setup replication between the sites?--With replication other sites would loss all the data. A fresh database would be created there.
Is there another option to manage site B in site A console without replicating?..NO
Site C has completely different, seperate policies etc. How do I setup Site A SEPM to manage Site C Server and clients? Setup Site C as an “additional site”..Once the sites are
installed it is not adivised to go for replication as it deletes all the database.
Apart from that there is no other alternative that I can think of.
So take back of the database go replication and restore that is the only thing that comes to my mind.