That could be due to duplicate or misplaced data, then. There's a fair amount of junk data that came from EDSM previously, which has since been cleared up on their side. I did a comparison against the full bodies dump from EDSM, and did a "soft delete" on my side to clean a lot of this up, but most of my spreadsheet scripts aren't checking for that yet. The good news is that I can start using that, which will help with the spreadsheet accuracy. The bad news is that the large dump isn't available anymore, so future junk data won't be detectable that way.