Hello Zafae,
Since I don't do meshing or analysis, I asked one of my buddies about your problem. He said he's had similar problems, and he found the easiest/quickest thing to do was to just edit the data with Excel. He said he would re-organize the data by copying the X Y Z columns into new columns and then copy those three columns into a new spreadsheet.
Hope that helps with your project

(what are you using for a Solver?)