Hi Enrique,
Is the "update data" Link opened in a new Window or Frame and the browser is not sharing cookies?
The best method to determine what is causing the re-prompt is to open a case with CA Single Sign On Support , reproduce the issue with Fiddler at the Browser, and then upload to the new case the Agent Log and trace Files for the Agent protecting the resource and the Agent serving as the Credential Collector, and CookieProvider if configured, along with the Policy Server SMPS.log and Profiler output and the Fiddler output in ".saz" format showing the initial Login and the subsequent failed request for the "update date" link.
This will allow Support to review the Fiddler output to verify the Cookies being presented and set on these requests, and to review the logs to determine why the Authenticated User would need to be re-Authenticated on the subsequent request for the "update data" link.
Thanks,
Rick Burnham