http://developers.de/blogs/damir_dobric/archive/2012/12/04/deploying-of-the-new-version-of-sharepoint-workflow.aspxAssume you have an activity which is executing for very long time. This is so called Long-Running workflow. In fact long-running scenario is one of scenarios in Commuter Sciences which practically can very easy be solved by Using Microsoft Workflow FoundationenCommunityServer 2008 SP1 (Build: 30619.63)