[Typo3] replicate content in multi-domain site

[christian reiter]

The indexed search definitely works when you use the advanced page/show
content of different page function. I.e. Site A has the actual content in
page ID 538, Site B shows this content on ID 2013, and indexed search plugin
on B shows ID 2013as a result and not 538.

> Search function... they each need to have a search function and I don't
> want to have a situation where I need to create 100 pages each with
> there own content JUST for the search function to work.