OK, let me see if I have this right… It’s because I’m not a Siemens guy. 
You can export from the Siemens software directly as an Excel file? If so, are there any other formats available? I ask this so that we can perhaps skip a step.
EDIT: On second thought, Let’s skip over that for now. If you give me a csv file with a bit of an explanation of your columns, I can take it from there. After we get that process working, we can look at other methods. 
Also it’s okay if it’s a full-column export. Meaning, you don’t have to remove any columns, just let me know which ones are in use. And also save an extra step. 