How to transfer Asana project between workspaces correctly?

Question

Project management

Good afternoon.
Tell me the tools of the correct (full, with the preservation of the entire structure and composition) Asana project between different
workspaces ....
It is ideal to transfer it to another account altogether - but this is apparently completely impossible ...

1. Native export / import - not enough - kills attachments, pictures, etc.
2. Service https://ditto.kothar.net/ - merges se comments under the task one long comment with a bunch of services ....

Maybe someone knows a working solution?