Mismatched colors across charts during bursting

[pimogo]

Let me explain my situation.

I have 4 charts on a report page, 3 of which have a common series. I want colors across each chart to be matched. Meaning if City A in chart1 is yellow, it should be yellow in chart2 and chart3.  I have property set to 'Matched' for each of the graphs. This feature works when running each report independently. 

The problem only becomes apparent when bursting. At that point, the colors no longer match. When i test a bursted report against a non-bursted report, the problem becomes apparent as the non-bursted report contains the matched colors.

Each chart is master-detailed defined in the properties to a parent query.

Any ideas what i am missing? Is this a known bug?

THanks for your help!