Allow data for catalog template uploads
Of course, it would be reasonable to also expect a limit to how much data can be provided for the template.
Not sure if this would help your situation.
I'm trying to learn whether triggers are included in catalog uploads. If you don't have the pro version, can you download a library with more than one trigger?
To your point, the developers probably disabled uploading data because people might accidentally upload personal data.
I see they have a planned feature to allow data fill from outside sources. (edit, spelling)