Rewrite rules has been changed !

Hi ,

i had to change some rewrite rules and now all indexed links in search engines are redirecting to the 404.php file . i'm wondering is there anyway to redirect old links with old rewrite rules to the new ones ???

here is the old format and new format of urls :

Forums :

old one for ex :
[forum_id]-[forum_title]

changed to :
[forum_id]-[forum_title]-NewKeywords-NewKeywords/

------------

Threads :

old one for ex :
[forum_title]/[thread_id]-[thread_title].html

changed to :
[forum_title]/[thread_id]-[thread_title]-NewKeywords-NewKeywords.html

-------------

Tags Home :

old one for ex :
tags-

changed to :
tags-NewKeywords-NewKeywords/

-------------

Tags :


old one for ex :
tags/[tag].html

changed to :
tags-NewKeywords-NewKeywords/[tag].html

thanks in advance .

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