Maps Not Loading or Deleting

[roblikescake]

So I had my server shutdown for a while to make a few changes in the worlds. I deleted on or two worlds from the configuration thing and then I went to add one from an existing file from another server I play on, as its my map, but i would apply the change and it would show up and id press ok. But then when i exit out of the configuration menu and re-enter it, the maps i deleted are still there, and the new map is not there. Why?

[younokillme]

Econ

[younokillme]

116.7

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Bett

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Bett

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Thom

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Fern

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Shel

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Davi

[younokillme]

Will

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Bizz

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Cold

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Fisk

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Snoo

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Orie

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Hele

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Neve

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Cafe

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Jenn

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Gues

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Puis

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XVII

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Visu

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Vita

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Robe

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Exch

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XVII

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Albe

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Ione

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Kera