Restricted stores still visible for a responsibility ?

Hello,

We  have 2 iprocurement responsibilities, iProcurement and iProcurement super user and 10 stores.

I created a content zone and secured it with the responsibility iProcurement super user.

Now i assigned this content zone to 9 stores but one. Saved all my work.

Cleared the cache using functional administrator.

Logged out and logged in again.

However with the responsibility iProcurement, i can still access all the 10 stores.

I am i doing anything wrong ?

Do i need to bounce the apache for these changes to get reflected ?

regards,

Candy