How port game that use Microsoft.XNA.Framework to Android platform?

If i want porting my windows phone 8 game(written in monogame + vs2013) to android platform i must removed all Microsoft namespaces form code?
From small research i found xamarin scanner page where if i put there my lib dll i got this:

Let me know if i am wrong, I must change all classes used in my game app that come from Microsoft.XNA.Framework? I must add my own Vector2, Rectangle class?

MonoGame contains replacements for all those classes (in fact, you are using them aready in you WP8 game). The Xamarin scanner doesn’t account for the existence of MonoGame.