Initial Solution and FirstSolutionStrategy

[soutrik-g]

I am trying to build a routing model where I pass initial routes to the solver which are unoptimized but fulfill the constraints imposed on the routing model; however, I am not passing initial routes for all vehicles and passing empty lists for some of their initial routes. Does the optimizer ignore the vehicles for which I have passed empty lists for or does it actually try to make routes for it ? Also if I pass initial routes to the solver does it ignore the FirstSolutionStrategy completely and only optimizes on the initial routes passed by me using the metaheuristic ?