Bozhin Katsarski

Yes, it does work when I manually provide the property names. However, I want to use the default in order not to have to change it when I add/remove properties...

According to [docs](https://sequelize.org/master/class/lib/model.js~Model.html#static-method-bulkCreate): `Fields to update if row key already exists (on duplicate key update)? (only supported by MySQL). *By default, all fields are updated*.`