Removing hidden metadata information from a Microsoft Excel spreadsheet is not difficult if you follow the steps laid out here.

How to Remove All of the Metadata From Excel Spreadsheets. Metadata includes identifying information such as as your initials, full name or company name as well as more personal information such ...

Saving a set of data in this format will removing any special Excel formatting from the data and simply place it in a list, with a comma separating each piece of data.