Not importing all metadata correctly from (hdoujin) info.txt

[2468-13579]

I'm importing zip files with an info.txt file for the metadata. I have the File Metadata plugin enabled but it only fetches some of the metadata. Those being the name, artist, parody, language, pages, tags and links. The ones it doesn't add are type, series, description and publisher. The main one being series, since it just adds the name as the series.
Note: I didn't fill all options but left them blank (example)

To Reproduce:
Enable File Metadata plugin.
Scan folder with zip files (example zip with white as pages).
Submit.
Check in inbox.

Expected behavior:
I would expect all the metadata to get imported.

Logs:
It recognizes it as an hdoujin metadata file (in both activity.log and plugin.log) and doesn't give me any errors:
--INFO [plugin].context.file-metadata.main: Attempting with DataType.hdoujin
--INFO [plugin].context.file-metadata.main: DataType.hdoujin matched!

Environment:

• OS: Linux
• Brave 1.23.71, Firefox 84.0.1
• HPX Version 0.13.3