When i switch thru the Material Configuration, why the Filament density and price are not changing? It is always the same numbers regardless which material i select.
Go to File > Export FFF Profile and save your profile to your hard drive and then open the .fff file in a text editor. Scroll to the bottom where all of the <autoConfigureMaterial> sections are. The settings that are within those sections are the values that will change when you select a new material. If you don't see the filament density option there, then you need to add the following line into EVERY <autoConfigureMaterial> section so that it does.
<filamentDensity>1.25</filamentDensity>
Then just save the file and go to File > Import FFF Profile to load it back into the software. It will likely be named something like "My Profile(2)" when you import it back in, since it will be a copy of the first one. So you have to make sure you select it at the bottom of the "Select profile" drop down list (since you will probably still have the old "My Profile" selected when you first open your process settings).