You can reopen project. In workbench, open project request type. at the right side of screen you can see reopen field. The field consist workflow steps. Select a step there. When you open project in front-end you can see reopen button. If you click it, project reopen on step which you selected in reopen field.
IT Governance Professional & PPM Solution Architect
I did this before. But, since the proje is closed, it did not effect the closed project. But I tried to open a new project and did all the steps and closed, it worked for the new project. I need something that can also affect the closed old projects.
Since you will have a workflow tied to your project request type, use the reopen step entry on Workflow from workbench. This allows the re-open button on status tab on project details tab. Carefull make this selection and you should be able to reopen the project. If needed you can reopen the workplan as well. I think you already have the steps to re-open the workplan.
Remember you might need to clear cache before you can see the button to reopen the request.