Why do downloaded MetaHumans that were created without Mesh To Metahuman not come with a MetaHuman identity?

Hi!

In order for my face capture to work, I need to use a MetaHuman Identity and let UE prepare and process that file. That works great for any Mesh to MetaHuman characters, because they come with the required Identity file. However, when I make changes to my mesh and redownload it, it does not have this Identity file available anymore.

How can I download the Identity file for edited MetaHumans?

Thanks!