Increasing the connection/session timeout limits will avoid any future issues or aggravations from the session disconnecting before you are ready for it to.
To increase the timeout limit:
1. Log into the CMC.
2. Click Servers.
3. Locate and open servername.Web_Intelligenct Processing Server.
4. Click Properties.
5. Locate the Connection Time Out entry field and change the minutes to the amount you desire.
6. Click Update.
7. Restart Web_Intelligence services.