In protools 12.3 they added a feature where you can control click on a series of aux tracks and select "bounce..." This will open a window where you can do an offline bounce for the auxes selected. Much more useful would be too also allow this feature to work on audio tracks. When the bounce is complete, the audio could be laid right on the track, rather than making a new track. Which would also allowing for destructive punch into these stems that you just created.
This would eliminate the need to either change each of the inputs of these newly imported audio tracks (when bouncing the auxes) or the need to go into that bounce window and use the dropdowns to select all the different busses you need to bounce. Which obviously would also avoid the possibility of error during either of these operations.