User blog comment:FairyRaven/Fairy Tail Chapter 421: Wendy and Chelia, Review and Commentary/@comment-24039250-20150224014538/@comment-24546844-20150224143230

I don't think Doranbolt is involved on the transportation of Lumen Histoire if it did happen (wich I also doubt). At least not without being spotted. His teleportation has a limited range as we have seen in the Tartarus Arc. Even if teleporting at top speed it would be inevitable for someone to see a man carrying a giant crystal. And it's would be improbable that he could track and erase the memories of all witnesses. Also I doubt he would be able to cross the sea in safety using just the teleports, but that would be easy as he could hire a boat then erase the memories of everyone after.

Maybe Lumen Histoire ins't exactly in Magnolia. It would be strange if in the last ~100 only the masters knew about something that's right bellow the guild unless it has some powerful illusion magic (not that it would be hard for Mavis). Then I can only think of two things: or there is Illusion magic there and there's no need to move Lummen Histoire or Lummen Histoire is somewhere else and the guild's basement only had some kind of portal that leads to it.