I'm using SharePoint 2010. I have several different site collections, but two of them have some information that concerns both collections. Until now the same information has been maintained separately on both sites, but now we want to share a subsite to avoid double work with updating etc.
The setup is this: I have a Site collection A with a Subsite A and a Subsubsite A. I also have a site collection B with a Subsite B and subsubsites B. In site collection B I would like to show the link to Subsubsite A as a drop down under Subsite B in Global Navigation, just as the "real" subsubsites for B are shown.
I also shared a couple of other subsites from A to B earlier, but here I added the whole Subsite A as a heading and then a link to a Subsubsite A under that, which then shows as a drop down. In this new case though I don't want to show any subsite from A as a heading, only the subsubsite of A under an existing subsite on B.
P.S. The top link bar is inherited from the parent site (home page). It shows all subsites (and subsubsites as drop downs).
