When DL and NW merged, there were two clubs in pier B and DL closed one [the NW club I believe] and kept the other open. So if you walk by one of the lounges, the sign said this lounge is closed without any mention of the other lounge and that is misleading.
When I was there last April, I got the impression that DL shut down the EWR SC, but after asking the DL forum they corrected my perception