I can’t think of a straightforward, simple way to achieve this, but by golly can I think of a convoluted, overly-complicated way!
- Have a Flat File source configured and set that as the authoritative source.
- Set up a Workflow with a trigger of Source Account Created looking for new accounts in the HR source, and another with a trigger of Source Account Updated looking for updates made in AD, and another with a trigger of Source Account Updated looking for updates made in the HR source. Subsequent steps should be the same, as outlined below.
- Configure all three of the Workflows with subsequent HTTP Request actions.
- Configure the HTTP Request actions to make PUT calls to the Update Account endpoint, updating the corresponding account in the Flat File source.
- Configure Attribute Sync from the Flat File source to AD.
I can’t stress enough how much I don’t suggest doing this, btw. The HR source should be the definitive source of truth for attributes, and changes that need to be made should be made upstream in the HR source. But if you really insist, there’s your workaround