Or, try using Quattro Pro X6. I have found that it imports Excel 2007 or before sheets rather well. Then save it as QPW file. Reopen the QPW file, then save as an ODS file. It has worked for me for files other than the charsheet. Let me hunt down the files when I get home over the weekend. I no longer have home internet service since even the cheapest ISP where I live wants a minimum of $120 a month. Then add all the FCC fees, charges, and taxes, and that $120 becomes about $230 a month.
If I can't find them, I'll do what I said above and upload the results.
rmfr