I think that a "how-to migrate" to the new scenery is probably required.
We have several ways to download scenery - http://www.flightgear.org/download/scenery/ describes the key ones and now needs a quick update.
Also there is terramaster. as well as the possibility of using svn checkout http://terrascenery.googlecode.com/svn/trunk/ terrascenery-read-only. - the last is not a very good idea for a number of reasons (80 gbytes I am told, and you may have trouble with the number of files involved), but it is possible to use svn to download just the tiles that you need.
Finally a clear statement of when and how to replace apt.dat in fgdata is needed.
I am not sure of the best way to proceed on these matters, perhaps one of the scenery team could find a moment to help. From what I have seen so far it is a stupendous piece of work, and gives a new way forward for the whole flightgear project. Thank you all.
Alan