Minecraft: multiverse map can no longer be deleted, why?

Have the problem that if I delete a world via Multiverse command or via FileZilla that the worlds are available again after restarting the Minecraft server. I have often deleted the worlds but they kept coming back and I don't know why. That the world comes back is only with 2 worlds, all other worlds can be deleted normally.

Sry when I say you

Did you ever delete the multi-verse config?

The config not directly but the worlds file.

I just asked and my team has already fixed the problem, thanks anyway that you answered mkr.