you’re the best for answering this.
someone gave me the simplest fix that I am amazed I’d not figured. The envelope points won’t stay connected unless you drag on the same timeline (rather than what I was doing….grouping then cutting and pasting). so I created an empty event and then grouped …then dragged the first area behind the second….some minor problems but not a whole bunch. Your way, however, is also very good!
Thank you, again, for taking the time to answer.