error 404 with old catégorie

hi viktor we use EFSEO and route 66

and i have tons of url in 404 because

www.crashdebug.fr/actuatlites-france/rev...echec-de-l-austerite

gave 404

www.crashdebug.fr/revelations-l-humanite...echec-de-l-austerite

is the correct url

and tons of other error, (screen shot attached)

grok make me a set of rule, but that slow down the server and he said that EFSEO is powerfull and you can perhaps help, i have tons of this old catégories too,

no emmergency

thanks

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