Direct links to pages in R12.2

Hi,

We've upgraded our R12.1.3 instance to R12.2.10.

Now we have problems that some "direct" links to OAF pages on new R12.2.10 are not working (but the same link was working in R12.1.3) e.g.:

http://hostname.domain.com:Port/OA_HTML/OA.jsp?page=/oracle/apps/eam/asset/webui/EAM_AD_DETAILS_PAGE&addBreadCrumb=Y&OrgId=1&asset=AS01&instanceId=123456

On R12.1.3 by clicking on such link you were redirected to login page (if you weren't already signed-in) and then to the requested page.

On R12.2.10 now we only get "You have insufficient privileges for the current operation. Please contact your System Administrator.