Hi Renee,
Thank you for the valuable information. I just checked out the survivingbreastcancer website and wouldn't you know that I live 55 miles from Boston and I'd find out about this Boston based group from a woman in Louisiana! I recently saw a program on Boston PBS where a guy was teaching Qi Gong. Like you, I found it very helpful. I had learned a little T'ai Chi years ago in a pain management program (unrelated to cancer.) It also is a very gentle way of "centering".
What my lymphedema therapist has told me is if you keep moving, doing any exercise, it keeps your lymph-fluids moving and that is good for your lymphedema. She has recommended swimming as a good way to get the lymph fluids flowing.
Again, thanks for writing.