Re: copy stuff from another tikiwiki
You could save yourself a little effort by at least using wget to spider download as much of it as you can. The local copies could then be manipulated (with some scripts) to at least have the text with the wikilinks.
I know this may not be what you want to hear right now, but I have a strict policy on backing up orionrobots once a week. I take both a database dump, and tar/gzip up a copy of the actual site too - and put them on a CD.
OrionRobots