Resolution:
You can modify the return air/ outside air arrangement in the field with a new return assembly or cut your own OA arrangement and control separate from the factory controls.
Field Modifications link below. There is only one Product choice for modifications however the team will redirect to the correct Product Group.
https://tranepresalesupportcso.zendesk.com/hc/en-us/requests/new
See drawing of the options in the attachment.