This plugin allows to add a message to pages of an archived project. In such message administrator can explain the reason of the removal. It also allows to specify URL to redirect. The plugin supports a special redirection mode, which redirects pages to the corresponding ones on another Redmine installation (can be used when the project was moved).
Author: Andriy Lesyuk
Moving projects out of Redmine 2.x
The Project Removal plugin 0.1.0 now allows to move and/or redirect projects or remove projects with a note under Redmine 2.x (up to 2.3.x). The plugin also tries to use the SEO-friendly 301 HTTP status for redirection.
Project redirection plugin
You will find this plugin useful when you need to remove a project. Especially when you move a project to another Redmine/ChiliProject host.