This is what I wrote on 28 September, 2020 but never got a reply!
Hi JNOPROD and gern,
I’ve got two suggestions but the first is a long shot!
Try highlighting one of your wav files and go to Audio/Bounce Selection/Replace and then drag onto a pad in Groove Agent and see if that works?
Don’t sweat over it! Simply double click on your original wav file then click on the Hitpoints tab, set your Threshold and Intensity sliders to taste and then when you’re happy click on Create Slices. Then go back to the project window and drag that sliced file onto the lowest section of the C1 Groove Agent pad (three boxes will appear!) and then all the individual slices will be mapped chromatically.
I’m interested to know how you get on?