SL13 ARA in Pro Tools ... Dragging the layers to timeline

Was using spectralayers 13 pro in Pro Tools today in ARA. I unmixed some sounds and dragged the layers to my timeline to adjust… the files stayed on my internal hard drive instead of rendering to the session folder/drive? Didn’t realize it until I handed my session off to someone else and the were asking for missing files, all of them were these ones.

Yes, the ARA plugin has no way to know where the project is stored.
You have to activate the Automatically Copy Files on Import option in Pro Tools (Setup > Preferences > Processing > Import section).