Row autofilling data in certain columns without formulas

I have an excel spreadsheet with data formatted as a table. It tracks by employee, expiry dates of their training certifications. When a new row is inserted anywhere in the table, it automatically enters dates in some columns but not all columns. The date column is not a formula but simply data. How do I stop this?

some dates entered as formulas. Excel took note. just copy/paste values

I did the copy/paste as values and that did not resolve the issue. I then searched for any other formulas and there are none in the date columns. Any other suggestions.