I see, thanks for the explanation. I finally understand your suggestion: if you could from the CLI save off the export JSON for a project's last export, you would then have explicit export settings for all your projects without needing to save the export JSON manually for each one.
I think it's a good idea. I've created an issue to track it:
EsotericSoftware/spine-editor760
We will need to determine the details of how it works. Where does it create the file? Next to the project file as project.export.json
?