Why does drill-down navigation kill my iframe?

[dblock]

I have a drill down in a Cognos 8.3 chart. Clicking it kills the iframe in which the Cognos dashboard is hosted. Anyone seen anything similar? Any idea how to fix this? (the IFrame is generated by GWT)

[gronhoffga]

Are you putting the URL of the dashboard directly into the inframe or are you using a portlet to view it? We are running a Vignette Portal and have URL's fed directly to Iframe's and that is a problem for us as well because when you drill down it actually change the report URL the Iframe is associated with. As a work around we just increased the number of rows to be displayed to like 5000 then all you get is a scroll bar on the right side of the window.