Quote URL periodically goes to homepage

Currently working on a proof of concept to call the Quote object from another application to mashup the UIs.  I am using:

http://***/sap/crm_logon/default.htm?crm-object-type=BT115Q_SLSQ&crm-object-action=B&crm-object-value=0005000023&crm-object-keyname=OBJECT_ID&thtmlbSliderState=HIDDEN&sap-user=***&sap-password=***

This works but sporadically goes to the home page instead.  I have found that when I hit CL_CRM_UI_FRAME_APP_CONTROLLER-PREPARE_EXT_NAVIGATION and lv_descriptor_object  is initial, I go to the home page.  I think I have tracked it back to CL_CRM_UI_SESSION_MANAGER-GET_INITIAL_FORM_FIELDS and my URL parameters are missing, but once I put a debug in here it always goes to the Quote and not the home page.  As a note we don’t plan on having the user/password in the link but are using it for the POC.

Any thoughts?