Where do I start... 

Here is the thing. I had a IPBoard installation v4.2.6 and I just started a new installation v4.2.7 on because lost some files on the transition of changing hosting company so I have the other database and I was wondering If I can just copy the forums and posts with replies to the new installation. I tried copying the tables directly but It didn't work.

 

I recommend that you migrate the entire database

Probably that might be the only option I just wanted to do the full fresh clean installation with just copying the members with forums and posts because in the other installation I was trying tons of themes and plugins all kinds of things and the file system is full of files and a bunch of crap. Also I had member uploads enabled and there is like 10 gb of images and all kinds of stuff.

the solution is simple, migrate the database and then on the new server just upload the ips suite files and configure your database in the php config

so you will be clean