I noticed that errors in cells (e.g. #REF!, #VALUE!, etc.) are read in as empty strings, is it possible to change this behaviour so that error cells can be distinguished from 1) genuinely empty cells, and 2) each other?
I don't know how upstream handles it, I wasn't able to find anything on this by googling other than there's apparently a possibility (or will be) of reading the formula instead of the cell contents.