Workflows recreation using API

We have a requirement to replicate workflows from an old Adobe Sign instance to a new Adobe Sign instance.
After reviewing the Adobe Sign REST API documentation, we do not see a POST or equivalent endpoint that would allow Workflows to be programmatically created, cloned, or recreated in another instance. To confirm supportability, could you please advise on the following:
1.    Is there any supported method (API-based or otherwise) to export, clone, or recreate Workflows from one Adobe Sign instance to another?
2.    If this is not supported via REST API, are there alternative supported approaches (e.g., admin tooling or Adobe Professional Services capabilities) for Workflow migration?
3.    Are there any known limitations or constraints specific to migrating or rebuilding Workflows during tenant separation scenarios?
4.  Can you provide any idea or any implementations in the past?