Let me keep this simple. Steps:
- New spreadsheet
- Highlight column A
- Press Ctrl-1
- Numbers tab Format code = DD MMM YY
- Press OK
- Go to cell A1
- Type 15 dec and press TAB
- You should now see 15 Dec 20 (or 21 if we are in 2021)
- Press the left arrow to go back to A1
- Type 15 dec and press TAB
- You will now see '15 dec (press F2 to see)
- The field converted to text verses staying with the previous date format and adding the year
- Go to step 9 and repeat several more times and you will see that it keeps cycling between the two formats
How do I fix this so it retains the date format every time?