So, on some module we created in the past we generated a friendly url to a detailpage, kind of like this:

string GetDetailLink(ItemInfo objItemInfo)
{
    string detaillink = "";
    int tbid = TabId;
    string Path = "~/default.aspx?tabid=" + TabId + "&itmid=" + Convert.ToString(objItemInfo.ItemId);

    DotNetNuke.Entities.Tabs.TabInfo TabInfo = default(DotNetNuke.Entities.Tabs.TabInfo);
    DotNetNuke.Entities.Tabs.TabController TabController = new DotNetNuke.Entities.Tabs.TabController();

    //Retrieve the TabInfo object from the TabId
    TabInfo = TabController.GetTab(tbid, PortalId, true);
    detaillink = DotNetNuke.Common.Globals.FriendlyUrl(TabInfo, Path, CleanTitle(objItemInfo.ItemName));
    return detaillink;
}

So the link would look something like:

www.website.com/pagename/itmid/123/name-of-the-item

which worked nice.

However I noticed the link is generated like this, but when I click on it the DNN Urlrewriter on only some DNN installations will take off the last part, so I end up with:

www.website.com/pagename/itmid/123

In the address bar.

It looks like on some DNN installations it will keep the complete url, and on some installations it will remove the last part.
And I wonder why, and what can be done about it.
I've tried messing with the SEO settings but I can't figure it out.
Perhaps someone knows?!!