Hi @ramon,
The assoc_type and assoc_id pattern, which is used in many parts of the system to allow entities to be attached to several types of other entities rather than just one, is used by groups. You should see assoc_type = 256 (which corresponds to the PHP-side constant of ASSOC_TYPE_JOURNAL), and then assoc_id should be the journal ID.
Regards,
Alec Smecher
Public Knowledge Project Team