Microsoft Report Viewer 9 - Parameter Controls Losing Values

We have a website that's using Microsoft Report Viewer 9 to consume reports from Reporting Services. We noticed an issue with the controls to set parameters losing their values.

We have a date control that's used to set a Start Date parameter for the report. When we use the date picker (calendar pop-up) to set the date, all dropdown lists whose values are dependent on the date picker开发者_如何学Go will lose their values. The values may be available in the dropdown, they just do not remain selected. The report data being returned is correct though.

I should not that we have not seen this issue in Microsoft Report Viewer 10 while viewing the same reports.

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After contacting Microsoft support, we believe this is an issue with Report Viewer, and that it has been resolved when using Visual Studio 2010.