We had an issue with the PushSharp(V2.2.1) in sending out Push Notifications to Android using GCM. So it was decided to use the latest FCM with the latest version of PushSharp (V4.0.10) .
My doubt is whether push sharp will send out notifications to the device tokens obtained from old App users which will have GCM implemented in them.(I am asking so because FCM claims to be the new version for GCM).
will FCM need new device token registered through their servers.?
Or will we be required to maintain 2 Schedulers to send out notifications to Android using GCM and FCM?