Will my data be preserved during Laravel migration?

Yes, completely. Zero data loss is a fixed requirement on every migration we deliver. We write idempotent migration scripts (so they can be run safely multiple times), run them on a copy of production first, verify every record count and checksum, and rehearse the cutover at least twice before the live switch. SEO URLs are preserved through 301 redirects, customer accounts and password hashes survive the migration, order history and audit logs are imported with original timestamps, and file uploads move to the new storage with original paths preserved.