Need to remove delivered "return to link" at bottom of self service page in portal

I have a page Veteran Status from HRMS
Self Service > Personal Information > Veteran Status
Normally if we access this page is HRMS there is a delivered link at the bottom of the
page "Return To Personal Information"  which we can easily suppress by adding NAVSTACK=CLEAR in Additional Params in Cref.

Now the problem is we are showing this page in our customized portal through a navigation collection based pagelet.
In this case the "return to" link shows up even though we use NAVSTACK=CLEAR in the actual Cref.

My requirement is to suppress this link in portal..Any pointers?