The values in the column are visible in the query editor, but in the model are not, but the data is available.
As you can see in the legend at the bottom, the entries are counted as values, but i can´t see them in the table, neither i can do a DATEDIFF function on it.
Tried to remove the table in the query editor and add them again with the same result. Not all date colums are affected, only a few. Format of the colums are untouched, still date format for those colums.