external DOI is not propagated between versions

https://dev-cds-rdm.web.cern.ch/records/v5sft-gtk28

<img width="491" height="376" alt="Image" src="https://github.com/user-attachments/assets/009f10c1-c744-4572-b691-30903faaf0f5" />

TODO:
- [ ] fix migration script
- [ ] fix values in production (sandbox and dev for testing)