Links in alerts are wrong after having moved a siteCollection to another content database with the repartition command


I am using SPSiteManager to WSS siteCollection in a SharePoint Portal environment to another content database. After having moved a siteCollection into another content database via the repartition command I recognized that the links in alerts of this siteCollection are wrong. If you have a siteCollection http://server/sites/siteCollection than after the repartion the link in the alert is http://server/sites/siteCollection/sites/siteCollection/Lists/xy. That is because in the database tables ImmedSubscriptions and SchedSubscriptions in the column SiteUrl is written the Url of the siteCollection http://server/sites/siteCollection instead of the Url of the portal site http://server.