Re: [xwiki-users] oddity after upgrade from 6.4.2 to 7.1.4

As I mentioned you should use the Distribution Wizard which performs merges. Let us know how it goes. Thanks -Vincent On 7 Mar 2016 at 16:18:30, Jack (lilihongbeast(a)163.com) wrote: hi vmassol, the XAR contain my old system(6.4.2) export all data to xar. then i download "xwiki-enterprise-jetty-hsqldb-7.1.4.zip" and modify xwiki.cfg, xwiki.properties ,web.xml files and then import xwiki-platform-watchlist-ui.xar,xwiki-platform-xclass-ui.xar,xwiki-platform-watchlist-ui.xar etc to overwrite 6.4.2 old data for update the following error: "ERROR .o.i.DefaultObservationManager - Failed to send event [org.xwiki.bridge.event.DocumentUpdatedEvent@bb170136] to listener [org.xwiki.watchlist.internal.AutomaticWatchModeListener@1abc920] java.lang.ClassCastException: com.xpn.xwiki.objects.LargeStringProperty cannot be cast to com.xpn.xwiki.objects.ListProperty" I think import xwiki-platform-watchlist-ui.xar,xwiki-platform-xclass-ui.xar can solve the problem,but it didn't work