So I keep my vault population at 199. All dwellers at max experience. Almost all are at max level in all SPECIAL attributes (in a few days the last of them will be maxed in all areas). However, today six dwellers just up and vanished. They were all in one room and were definitely there when I logged out last night. I logged in this morning and the six of them were gone.

Completely gone... the vault population had dropped by six to 193. Their equipement had been returned to my stores. Just plain vanished.

I can only think its some sort of bug. Anyone else encounter this? Or maybe even know how to magic them back?

Its a pain because it means I will have to replace them with new dwellers that I will have to start levelling up from scratch.

Check in the Jefferson Memorial.

Mine have been disappearing also over the last week I've lost 8 dwellers. Now my game keeps crashing.

Huh? Am I missing something?

I had a dweller disappear several months ago that was one of my original dwellers. I now have a vault population of 186 and I noticed one of my other original dwellers is gone. I'm sure other less distinct people have vanished with out me noticing but why is this happening and what can I do to avoid any more of my maxed out dwellers from falling off the face of the earth?

ive also lost 7 dwellers and their wepons put back into my storage, they was all lvl50 living in top room strange, now im lvling back up lvl 1's for cola rooms not happy but im end game all i do now is look after my 50 full stat wastelanders