Ok. I will describe steps to fix. I use phpmyadmin to work with MySQL DB.
1. Install and activate WP-Testing plugin on primary website. (It will create all necessary tables)
2. In phpmyadmin export all tables wp_t_* to *.sql file. (I exported separatelly.)
3. In all *.sql files replace text from wp_ to wp_X_ (X is the subdomain index, in my case it is 2)
4. In wp_t_passings.sql file change wp_X_users back to wp_users. (Because WP use global users for all subdomains)
5. Restore *.sql files in phpmyadmin.
6. Go to WP-Admin for subdomain and activate WP-Testing plugin.
Done.
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This reply was modified 7 years, 6 months ago by miresru.
