The scatter plot has the very helpful function to plot bands from different products. However, the results are often on a 1:1 line, although they should be different. It happened that the first scatterplot looks ok and after changing bands once or twice, the effect occurs. It happens especially when the bands from the different products have the same name.
It also shows results although the products are not overlapping (which should not be possible).
Working with one products seems to work well.