Topher is correct. You can Save your scene in the Invigorator and the Open it up in ProAnimator.
Here's how to do it:
1. Select your Invig layer in After Effects and open the Invig Set-Up window for that layer.
2. Type Cmd+S (Mac) or CTRL+S (Win) to bring up the Save dialog box. Save your scene.
3. Create a new layer or solid in AE and apply the ProAnimator plug-in to it. Create a New Scene.
4. Open the ProAnimator Set-Up window and type Cmd+O (Mac) or CTRL+O (Win) to bring up the Open dialog box. Open your saved scene.
Everything you saved in the Invig will be placed into a single ProAnimator Track, ready for animating.