Localization in excel

Hi guys! The question is if there is any easy way to import excel files with all the text (source language + translations into many others) in them into engine?
The case is that I can’t work with .po files as they are not suitable for changes tracking. And converting excel into .csv doesn’t suit also, as in one excel file are English (source language) and it’s translation into 14 other (or more). We worked with such system in ue3.