Don't summarize option missing

I have a table with a column of dates. If a unit sumitted a report, the date populates. If they didn't, I want the cell to be blank. 

However, the values box does not have a "don't summarize' option. There is only count, first, last and count disintct. I have the column set to text. However, when I set the column to whole number, decimal number and even date, the 'don't summarize' option is not available. 

Did Microsoft delete the option in Power BI? If so, that's disappointing. It's a nice feature. Otherwise, does anyone know how to address this issue? Thank you.

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