Change of form

I buy these bags for 7 years for a Power vacuum cleaner 40, no problem, a little expensive (3 euros each) but good quality. Since this summer Nilfisk changed the shape of the bags. After several emails to the manufacturer, including Denmark, I finally received a response from the Nilfisk Customer Service. Change to, supposedly, better quality. They are certainly finer ... maybe that aspiration is better? But the problem is that the above form is not suitable for vacuuming. We lose at least 30% capacity. We will change the vacuum cleaner ... and incidentally mark.