Unfortunately for security reasons I can't share my QVW and to recreate this particular scenario is pretty complicated. For what it's worth I don't think that this kind of thing is possible as the sets always resolve according to the "current state" rather than the calculated state.
I was looking for something like:
(Set1Results)-(Set2Results) where sets 1 and 2 share the same dimensions. I want the chart to plot according to these results but to display based only on the dimension (date) characteristics associated with set 1. This is impossible so the results of the query end up as Set1Results (append) Set2Results.
I changed the chart that I was working on to something similar but far less awesome. Thanks for the read.