Can pontics, or pontic spaces be added to Invisalign trays?

I was in an accident which caused dental devastation. The 3 teeth behind the U L Canine were broken & extracted 8 tooth shifted forwards I wear an Essix with 3 pontics It works well esthetically (There are no teeth on the upper left behind the lateral canine) I will be having a bone graft & implants placed soon Invisalign planned to move #8 back into alignment. Question: Is it possible to add pontic spaces to the distal end of Invisalign ? How? Scan wearing Essix?