Final Fantasy Hacktics

One more quick question, for the "Copied" sections, are they vital to be exported? Like, does the game itself just reference those sections normally, or is it something that can be cleaned up a bit to save some space? I figure it's only a "copied" section in your spreadsheet to minimize the amount of text that needs to be modified, but just want to be sure before I end up breaking something.

Any way to have this sheet work with Libre Office? I don't really have access to Excel, and don't want to pay for a copy for literally just this.