Here is the responce I received from Becky Parks after sending her a PM
There has not been a change in policy on AGR coupons. However, based on what you have described below, we have sent a memo to the Club Acela managers to ensure that agents are aware the passes are intended to be a full day pass for members. I apologize for the inconvenience but appreciate you letting us know about the issue so that we can work to resolve it.
Senior Marketing Officer, Amtrak Guest Rewards