Deleting and re-creating a Service Desk-enabled project causes errors

Steps to Reproduce

1. Add a project
2. Add a Service Desk to that project
3. Delete the project
4. Create a new project with the same name/key as the previous project

Expected Results

The new project can be used as normal, and can have a new Service Desk enabled for it.

Actual Results

Old Service Desk data from the previous project can prevent the Service Desk from working properly, or even from being enabled at all.

Workaround

When creating projects that have been previously deleted, use a new project key.