[gdavide]

I’ve successfully installed bbpress2 and migrated every content from the old mingle forum and topics/reply to bbpress, by following these advices:
https://codex.bbpress.org/import-forums/mingle/

To rewrite every old mingle topic’s google search to bbpress, i’ve modified the .htaccess file on the root directory as shown below:

RewriteEngine On
RewriteBase /
RewriteRule ^forum/forum-group2/discussioni-forum1/(.*)-thread\d+ http://www.mysite.it/forums/topic/$1/ [R,L]

(in my case i’ve only one forum)
It works!

[Robin W]

Great – welcome !