View/Edit Managed title - Custom Package Record: Custom Package URL field does not display

Steps to Reproduce:

1. Log into https://folio-snapshot.dev.folio.org/ as diku_admin
2. Select a title (managed) https://folio-snapshot.dev.folio.org/eholdings/titles/19342922
3. Click "Add to custom package"
4. Choose a package and enter Custom URL
5. Click Submit
6. Goes to this package-title record: https://folio-snapshot.dev.folio.org/eholdings/resources/123355-3280251-19342922
7. Click Actions -> Edit
8. Notice that the Custom URL field is missing
9. Click Save & close

Please find the attached video.

Expected Results:

• Custom URL is saved in eholdings for a managed title in a custom package
• Custom URL is returned to HLM (EBSCO's app) for a managed title in a custom package

Actual Results:

• Custom URL is NOT saved in eholdings for a managed title in a custom package. Instead it populates the Managed URL field.
• Custom URL field is not available on Editing a managed title - custom package record.
• Custom URL is not returned in response thus not available in HLM (EBSCO's app)
  Additional Information:
  Please find the attached video and slides. It seems custom URL is the only item which is "left behind"
  Interested parties: