Thank you for your helpful reply.
When I first thought of "mirror," I was thinking of what happens on YouTube where when a video which may be taken down (or lost for some reason), is "mirrored" at another location for safe - keeping.
In thinking of how this would relate to a BBS Forum. It gets more complicated.
I thought perhaps of shutting down the original board for new postings but leaving it up so citations and links would still be available? I thought of this since I'm not sure I can copy the original style when I upgrade. And I may want to take advantage of newer features?
If the site becomes unstable in the future; for instance if the server that it is on gets moth-balled [I'm told it's parked on a old server], then this would not work?
I not sure how the pointing of the domain works, but I'm thinking that would mess up the old links. So if we move to a new, but related domain name, I would just put a sticky notice at the top to describe / link where the further conversation was being held?
Aside from all this, I did not download the site properly over the past few days, so the .jpgs will not come through.. The file looks to be about 1 1/2 gigs short of what is parked on the server.
I tried to download today with the new settings and got an error message; a certification error and also a statement in the Filzilla scrolling information, that "server does not support non-ascii characters" And I can not download. Support was not able to help me, other than to say I should be able to download it and that they don't support download of binary..
It was suggested that I try another FTP client..by the tech. Don't have time to try that right now.