@sanatisharif sent you the instructions email, i am going to paste it here as well for others
For all the newusers I am going to make the assumptions of their JoinDate based on their first thread or comment;
@sanatisharif since your importing to an existing nodebb database
BEFORE you test it make sure make a copy of your original NodeBB database, setup a TEST NodeBB instance, and test with that before you do on your production database
After you have that done, here are the import instructions, I am going to assume that you are using a Linux based system, or mac
# go to the NodeBB directory you have
# delete any previous import plugin you have, then a install the latest one, it was ONLY tested against NodeBB 1.0.0, but if you are running 0.9.x it should also work for you.
rm -rf node_modules/nodebb-plugin-import
git pull https://github.com/akhoury/nodebb-plugin-import.git
# then go back up a directory and install the disqus plugin, since it's not published to npm yet, you need to do it manually
git pull https://github.com/akhoury/nodebb-plugin-import-disqus.git
# here you need to paste your disqus XML exported dump file somewhere, let's paste it here, you dont have to do that, part
cp /path/to/my-file.xml .
# now go back up to run nodebb
# run NodeBB