Well, I've been agitating to try to get access to the backups of the files of the old gamespy FSDoc from the admins, but for whatever reason the admins've been unwilling or unable to provide. Google, however, has been more forthcoming.
If you want to start transferring specific old articles that you remembver as being particularly good, google for
site:dynamic.gamespy.com FSDoc ARTICLE NAME, and then click on the link to the cached article (or you just get redirected to the new wiki).
The only disadvantages are the age of the cache vs. the age of the final edit on the old article, and the fact that some articles are sure to be missed because we simply can't remember the titles of all of them. But it's a good way to get at least some of the old info back.
It takes about 5 minutes to do a basic edit-in of mediawiki code - check the PCS article for an example of that basic code.