1) In current game (started before NFP, I am playing slowly) my city had a trade route to a Mongolian city (Cardiff). Eventually it ended, two trade posts were c4reated, as usual, but after then I was said there was no place to route from that city. Though Cardiff is still here, still Mongolian, also there are, in close vicinity, a city state, a couple more Mongolian cities, a couple of Persian cities and two cities of my own. I am not at war with anybody and WC din't ban trading with me.
I move the trader to my neighbour city and he easily made route to another Mongolian city (Tver).
Could NFP be not fully compatible with old saves? Or something?
2) Same game, same turn, another end of the world. My spy can't steal any great work from Amsterdam. Though I clearly see Amsterdam's art museum has three pictures, and I have plenty of room in my own art museum, palace and national history museum.
Could it be something but a bug? Some rule I don't know about? Like, I can't steal art until all my amphitheatre slots are filled?