Thank you for trying, however, similar to the 2021 post this problem went away by itself after many attempts at different things. I went so far as to create a test project with one form containing a single time field. It did not work either, BUT, after changing the time format from the default to something else, exporting/importing and then changing it back to the default and exporting/importing it suddenly worked! It then worked for all the “real” project as well.