Board Thread:Comics/@comment-4324417-20150408043100/@comment-3361105-20150411200252

The whole concept of convergence is that Brainiac and Telos collected these cities right before they were destroyed or erased by some kind of continuity changing event.

So, Lian is alive because she was taken from a time before she was dead. She's not resurrected, she's just not dead yet, as far as Convergence is concerned. The same is true for everyone else who is alive instead of dead.