MyBB Community Forums

Hi guys,
I have a forum that runs 1.6.13 currently. I want to upgrade it to 1.8 but, my database, ftp etc. completely messed up by not perfect uninstalls of plugins, my personal editings, etc.
So I want just core forum things (posts, threads, forums, users, pm's, user details etc.) to be upgraded, so i hope that i will have a clean forum for further things.
I can use my localhost for any purposes.
Thanks in advance guys!

still up-to-date...

you can try creating empty database with MyBB 1.6.13 original data structure and import only required data and do the upgrade ..

(2015-02-06, 04:35 PM).m. Wrote: [ -> ]you can try creating empty database with MyBB 1.6.13 original data structure and import only required data and do the upgrade ..

Where can i find the original data structure and the required data?
I mean, if i knew these, there was no point of opening a support thread like this.