It would appear that at least from a formatting perspective there are the following initial considerations:
1) If the pages have been already mocked up in a moodle wiki (erfurtwiki) then the best way to provide them to a new moodle via directory is to edit the existing wiki page, click on html view, then copy the html to a text file.
2) you must not have any extension on the filename so that the filename matches the page name used in the wiki (arguably if you used extensions in the wiki pages you might be able to keep the extension... but I have not tried it and why make it that much more confusing)
3) Exporting to html apparently creates links which the wiki will choke on... and the old wiki apparently does not currently support any other method of export. However, if one uses an html to mediawiki converter such as
http://openfacts2.berlios.de/html2wiki/index.php, will that convert content so that one can automate the process, and if so, if there a conversion routine that can be applied to a whole directory? {Would mediawiki be the closest approximation or is phpwiki closer. Would editing result in more time being spent fixing the conversion??}
Comments?
If one does all this for an individual student wiki of say 5 pages (as perhaps with a journal that has various prompts over a set of exercises) will all student wikis then contain these five pages?