Steps to reproduce:
1. Go to "Upload a recording", fill in the fields and make sure to select a series
2. Upload the recording and let it process.
3. In the admin UI on the recordings page, hit the little gear icon to get to the details of the workflow
4. Check the contents of the recording's episode dublin core
The Dublin Core does not have the "isPartOf" field
The isPartOf field should link to the series.