No, you can't. It will import and re-export every cell, not just the one you modify. This includes interpreting dates and rounding numbers that exceed Excel's m

No, you can't. It will import and re-export every cell, not just the one you modify. This includes interpreting dates and rounding numbers that exceed Excel's max value (instead of interpreting as a string) They have a small banner at the top to warn about this, but it doesn't even address the things that were already lost the instant you opened it.