Column properties not copying over into new added row


Hello- I have been using this Sheet for over a year with no issues to track expiration dates with conditional formatting for various reminders. Now, any added rows to one of the Columns are not carrying over the Column Properties for future dates. I removed the conditional formatting and its's still not working.

The Column, "Med Card EXP Date" is restricted to dates only. When I add a new future date, an override pops up. Any ideas on correcting this?

I have picked random rows within the Sheet, created a new column, and it still not accepting the new future date.