The forum I help run has gotten quite old (still on Version 1.1) and we want to upgrade, but doing so would break many features which are incompatible with the current version. Our site owner is open to locking down our current forum and installing a second forum in a subdirectory (we have hundreds of thousands of links all over the web we don't want to break, and this solution would leave them all active and the original site can become an archive with no registration or posting, but still intact), but I'm here to find out if I can assure him that doing so will not break any databases or cause other issues.
If that part is not a problem, we were hoping it would be easy to import just our member data to the new site so everyone could retain their user names, passwords, member groups/permissions, and even trivial stuff like post counts and avatars.
Is this considered bad form, or is it common, or something in between?
Any advice would be greatly appreciated!
We have our 10th Anniversary Fractal Art Contest in a few weeks and I'd love to make it a Grand Opening Event for the new forum, if possible