Re: advanced searching
No tricks, the search only searches through indexed pages as well, not all items will beindexed because of the way the search engine intikiwiki works.
To answer your question, its a huge PIA!
You need to go through every single table in your TikiWiki database changing the username from value A to value B
Do NOT change the username Admin in users_users. If you do you will break the tiki site. Admin is a must have user and cannot be renamed.
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