Add functions to Windows Service that include WCF service

Hi.

Not sure if this is WCF or windows service issue or visual studio issue so I'm posting here.
I have a windows service that includes a WCF service that runs on a remote server and works fine (the service is NOT IIS dependent).
Now each time I want to add something to the service I have to manually remove the windows service from the remote server, copy the new files, add the service again and start the service and update my local service reference.
That is pretty hard considering that this service runs on 10 different remote servers.
The issue is happening on newly created functions, meaning if i tamper with an already existing function , stop service, copy files, start service update service reference, it works OK but if i add a new function on the service (and the OperationContract) then that function cannot be viewed at all and is only visible if i remove , copy ,install, start the service and update local service reference.
Is this an expected behavior of there is something?

Thanks.