I am documenting this case with the Community's assistance. I transferred from InterServer to Hetzner using their advertised 'free site transfer' Service. The Result was partial:
- Database: restored to 2024-11-03 (three Months missing)
- Media files: approximately sixty percent transferred
- Custom nginx configuration: not migrated, not documented
- SSL certificates: regenerated instead of transferred
InterServer Response: 'custom configuration outside standard scope.'
I was assisted in manual Reconstruction. Partial Refund obtained. My Knowledge Base now includes:
- Pre-migration Configuration Export Checklist
- Verification Steps before DNS Cutover
- Post-migration Audit Script