I am a returning player after the RTB event and I placed a house. I was trying the EC because it looks amazing, but I still like to Mine in the CC. I noticed when swapping between the two that when I went into customization mode the tiles I had saved in a template were orange and they weren't in the EC. When I finally made enough gold to finalize the layout the EC wouldn't allow me to finalize even though none of the tiles were orange. I had to fix it in CC. The tiles that were in question were due to me trying to use the least amount of columns to hold a floor up below it without using full walls. I hope this makes sense! Thanks!