It looks like the information being charted is from the first record. Can you verify by seeing if the amounts match that record in the sort order?
If so, then I suggest the field Trans:: Total Abs is not a summary field. That is what you need to summarize the found set of records, I believe.
Boy, do I feel pretty stupid. That's so obvious! Thanks for pointing that out. That was it!
Do not feel stupid. That is how we learn. By making mistakes and learning what we did that wasn't right.