If you edit the client on an existing project, all time entries and expenses tracked to the project will remain intact and update to reflect the new client name.

You'll first need to unlink any invoices that are linked to the project you want to move. Please note that you may not be able to re-link the invoices to the project under the new client (see below). 

To unlink invoices from a project:

1. Head to Projects and click on the project name. 
2. On the Project Analysis page, click the Invoices tab. 
3. Next to each invoice, you'll see an Unlink button. Click that button for each invoice to unlink it from the project. 

Note: You won't be able to unlink invoices linked to retainers, or invoices drawing from multiple projects. Your best bet would be to delete and recreate those invoices.

Once the project's invoices are unlinked, you can then assign them to another client. 

To change the client on a project:

1. Head to the Projects section and click on the project name.
2. Click the Edit project button.
3. Change the Client dropdown to the client you want to assign the project to.
4. Click Update project at the bottom of the page to save your changes.