I am loading a basket file into orange. This is the content of the file:
beer, milk
bread, butter
bread, butter, jelly
bread=2, butter
beer, bread
If I load this data orange loads the data as categorical as it should. As this is the datatype that allows the usage of associate rules.

If however I change milk to bread the data is no longer loaded as categorical.
beer, bread
bread, butter
bread, butter, jelly
bread=2, butter
beer, bread

Why is this? How can I can I load the data as categorical? Bear in mind that my real dataset has more than 100 columns.