I just left a project where I architected the system and managed multiple dev teams for two years. The manager who replaced me is doing maintenance and updates

I just left a project where I architected the system and managed multiple dev teams for two years. The manager who replaced me is doing maintenance and updates with a pared-down team, yet took "principal software architect" as his job title -- which is definitely a loftier title than I took. Maybe I need to ask my boss for a "title raise" ;)