OK, it seems like this:
I can move pages to CS when the page-name is not used in main...
if it is used in main, it seems the page is on "talk" (like Installations) or I can't move it to CS Aurora (or CS_Aurora) at all as it says the page is already existing (Wealth) - don't know if it is just a copy of the "main page" or a mirror that could just be overwritten without messing with the main page - so don't want to mess with it -.-
maybe just a prefix (like C-pagename) is really a way to go... may not be a "clean solution" but the pages are not mean to stay for years but only to give the new chances an order till C# is released and help to update the "old" pages not replace them...
if you are OK with a prefix I would go this way... seems just a little bit too complicated to make the "clean solution foolproof" and not worth the risk to break the existing Wiki pages -.- also don't think the project is worth the time for you to deal with my mess -.-
might also been a bad idea from the beginning.. maybe I should just make it in word for myself insted of messing with the Wiki -.-
EDIT: Ok.. the example of "installations" brings this:
http://aurorawiki.pentarch.org/index.php?title=CS_Aurora_Talk:Installations leads to "my page" it is in discussions ... clicking on "Page" (which is red as if the page does not exist) I get to the "main" page Installations for the VB6... guess it is a copy of the site and no mirror but am too cowardly to test it ... don't want to break anything...