Game scene Duplication

Hello, I am fairly new to Xcode and after a few months have a successful endless runner game! I have been curious to see if it is possible to create a second level, basing from duplicating my original game scene. I have tried this out of curiosity and I am able to access on simulation the X2 game scenes- My problem is that everything in the game scene including my player is completely still. When I tap the screen my player animations work, however I have no movement of backgrounds / no player movement either. It was a little odd as this worked before I attempted to duplicate. Can anyone help suggest what could be causing this / or the correct method to approach when attempting to utilise your current code to create a second game scene... Any help would be much appreciated! It’s taken a lot of head scratching over the past few weeks.. :( Thanks in advance, AJ