Hi hleemhuis, one way to easily see the modified parameters is by loading the same preset on slots A and B. If you modify only one of them, you can see the list of modified parameters by right-clicking or long-pressing the A/B button, and compare their old and new values by alternating between A and B (the keyboard shortcut is 'C', can also be assigned to a MIDI event).You can also test the influence of a single parameter by right-clicking or long-pressing the slider, and pressing the "Reset" button that appears on the contextual bubble. Pressing it once resets it to the preset value, pressing it a second time re-applies your changes.
Hope this helps!
]]>