Here's what I've found out so far.
1) Created a simple instrument track for grooveextractor_lite
2) Created another instrument tract for Addictive Drums 2
3) Set up routing
4) Opened Groove Extractor (GE)
5) Dragged an Aaron Comess drum loop into GE (DrySwunk_Verse01_100bpm.wav)
6) Face palm! REMEMBER to switch from Electronic detection to Acoustics
7) Opened the step sequencer
8) Dragged the resulting MIDI into the step sequencer
9) Adjusted the key mapping to match up with AD2's default keymap (kick was ok (36); the other four needed remapping)
Bingo! Worked like a charm. Of course, the resulting audio from AD2 was no where near the original loop, but that's not the point.
The issue I still have is if you create an intermediate MIDI file, it will be Type 0 and not Type 1, so that needs to be followed up on.