Jun 22 2021 08:09 AM
Jun 22 2021 08:32 AM - edited Jun 22 2021 08:33 AM
When you reopen, are you reopening the CSV file? Unless I'm mistaken, CSV files don't retain Excel specific formatting instructions. (If I understood the sequence you're describing). The whole point of CSV is that they're basic "comma separated values" -- full stop. Nothing fancy.
Why are you saving as CSV? Is that somehow essential?