GSM-45528
If -force is specified, all sessions will be disconnected requiring the session using the global service to reconnect (potentially to another instance).
If -force is not specified, then sessions already connected to this global service stay connected, but new sessions cannot be established to the global service.
If -force is not specified, then sessions already connected to this global service stay connected, but new sessions cannot be established to the global service.
Cause
GDSCTL help message.