845a8e7d_ption___MuOnline_Pentium_Tools__Why_to_edit_
[File Location] \Data\ [File Name] Gate.bmd [Description] The gates that move player from one map to another map [Why to edit?] 
If you want to add new gates. After editing you should export it to server side gate.txt(usually in server data folder) that it will match.
MuOnline Files Description - MuOnline Pentium Tools
Why to edit?