If you've accidentally created a project under the wrong brand, you can simply edit it by clicking on the "Edit details" button in the project overview.
Choose the required brand and click on "Update project".
All the tracked hours under the former brand will be edited and transferred to the newly selected brand.
All the assigned expenses or other external costs will be reassigned to the newly selected brand as well.
Note: You can change the brand in the project only if no invoices have already been created.
Important: After changing the brand, always click into the Contact person field and reselect a contact from the offered list - even if it looks like the same person as before.
Allfred treats contact people as belonging to a specific brand (each has its own ID), so a contact person that seems identical under the old and new brand is actually a different record. If you don't reselect it, the process won't complete correctly.