Can you please describe it correctly.
When you say 'importing mesh from the meshing workflow to the watertight geometry mesh workflow' what does it mean? Do you already have volume mesh or surface mesh with you?
Please check following videos
Fluent Meshing Watertight Workflow:
https://www.youtube.com/watch?v=aBxbYRVoRLo
Regards,
Keyur
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