Problems with mobs and etc

So I decided to try and work on my foundry quest which I haven't done in a loong time, and am having a problem. So I have two separate rooms which are both on same map but only traversable through teleporters. One room (which you dont start in) has mobs. From what I read in this board, the teleporters (which I remember used to be instantaneous) now for some reason have a loading screen in foundry (but are instant in live). Problem is, when I try to go to the room with mobs, the mobs are gone, but if I start the game from that room, the mobs are there. Am I right to assume that mobs disappear when I go through the loading screen from the teleporter? Or am I not? I mean, the are suppose to be spawned at start, and you are on the same map as them, only being separated by teleports.

I tried to do a solution where they spawn after you reach a dialogue point, so I tried creating an NPC to spawn. However, when I do test the map, I cannot talk with the NPC. The game gives me no option to interact with it. Can I not create random contacts that you can talk with that is not part of the main story quest line?