Before starting the migration:
- upgrade both the source and target websites to the latest available versions of the component
- backup the source and target websites
Migrate core functions with JUpgrade or SP Upgrade or similar so that user ids are preserved.
Export the 24 x Joomla 1.5 Kunena databases with “Quick” and “SQL” options (Note: you can multiple select tables and export them as one file):
- jos_kunena_announcement
- jos_kunena_attachments
- jos_kunena_attachments_bak
- jos_kunena_categories
- jos_kunena_config
- jos_kunena_config_backup
- jos_kunena_favorites
- jos_kunena_groups
- jos_kunena_messages
- jos_kunena_messages_text
- jos_kunena_moderation
- jos_kunena_polls
- jos_kunena_polls_options
- jos_kunena_polls_users
- jos_kunena_ranks
- jos_kunena_sessions
- jos_kunena_smileys
- jos_kunena_subscriptions
- jos_kunena_subscriptions_categories
- jos_kunena_thankyou
- jos_kunena_users
- jos_kunena_users_banned
- jos_kunena_version
- jos_kunena_whoisonline
If necessary, amend table prefixes by searching and replacing all of the old prefixes e.g. jos_ to j25_ inside the file(s).
Delete the 22 x Joomla 2.5 Kunena databases.
Import the Joomla 1.5 Kunena databases into Joomla 2.5.
Copy across files in /media/kunena/attachments/
In Category Manager, reapply the permissions as these don’t seem to be copied across.
References:
http://www.kunena.org/forum/159-K-17-Common-Questions/111394-Transfer-kunena-17-with-joomla-15—in-joomla-17
http://www.kunena.org/forum/159-k-16-and-k-17-common-questions/103459-merged-topic-how-to-move-my-kunena-forum-from-one-site-to-another#103539
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