I’ve created two custom metadata fields, one of type date named Journal Date, and one of type text named Journal Date text. I have put 3/6/20 in both fields for a particular file. If I search by selecting “Journal Date Text” in the “Search in” dropdown, and select any of the operators, it finds the file. However, if I do the same thing using the “Journal Date” field, it never finds the file.
This is covered by two bug tracking numbers [LH3700] and [LH2698] - doesn’t sort in the outliner either. Right now it appears the text version is the only way to sort and search for dates in custom metadata.