BTW... it may depend on what version of BIAB you have (year) and what operating system you are using... so you might indicate that...

Here is another way....

Open the folder where you want the files in the Windows File Manager (assuming you are using Windows.)

From the main BIAB screen, click on one of the green track names along the top - like "Drums" or "Guitar"... while holding the mouse down (right-click button), drag to the folder and drop it.

Repeat for each track.