This is known as Curtain Roulette and a search will give you lots of information on that. The curtain can move at any stage between the rows, thereby expanding or contracting the Club Europe cabin. As things stand you will be turfed out of those seats on or before OLCI and left to find whatever seats are still left. On the other hand if the curtain goes forward then you will be OK. Hence it's a gamble, usually you will lose. The second exit row area is safe from CE, it won't go that far back.