Legacy voice recording platforms are quietly becoming one of the biggest hidden liabilities for regulated firms, only surfacing as a problem when a regulator requests records or an audit demands a specific call.
Ageing infrastructure, orphaned metadata and long-forgotten codecs do more than slow teams down, they create genuine regulatory and financial exposure, said Wordwatch.
Wordwatch recently delved into what it sees as the cost of botched voice data migrations and why they matter.
The instinct when an old voice recorder reaches end-of-support is to migrate: move the files, rekey the encryption, rewrite the metadata, done. In practice, it is rarely that straightforward. Voice data is not email. Codecs, encryption wrappers, time-aligned metadata and legal holds introduce a fragility that most migration projects only uncover once it is too late.
Several failure points recur across these projects. Manual migrations can rack up substantial costs through consultancy day rates, custom scripting and validation cycles, only for the cycle to repeat once the next system reaches end-of-support. Every transcoding or re-encryption step is also an opportunity to break the chain of custody, and even small error rates at scale raise red flags with regulators when call authenticity cannot be verified. Rewriting metadata risks orphaning media entirely, disconnecting calls from the individuals, context and policies that applied to them.
Transcoding bloat is another concern, with file sizes potentially multiplying by up to 16x, inflating storage costs and slowing retrieval. More seriously, misconfigured migrations can miss critical fields such as legal holds or retention expiry dates, a regulatory failure rather than a technical glitch. MiFID II Article 16(7) requires firms to retain records of relevant conversations for at least five years, up to seven if a competent authority requests it. If a legal hold fails to carry across correctly, records get deleted permanently.
The FCA’s 2025 review noted organisations experiencing delays or missing recorded data from vendors, a symptom of the same underlying issue. Beyond the technical risk, these migrations consume significant time from compliance, IT and legal teams for limited business return, while rich metadata such as annotations, tags and case associations is frequently lost, limiting future search, analytics and surveillance capability.
The alternative is to stop migrating altogether. Consolidating legacy and live recordings into a single compliant platform that preserves original file formats avoids reformatting risk entirely, protecting the audit trail while keeping records defensible and verifiable.
Applying and preserving regulatory and legal hold metadata at the point of ingestion means retention policies are enforced automatically. The result is a smaller storage footprint, reduced maintenance overhead, and a voice archive that remains usable for surveillance, data warehousing or AI models, rather than cargo to be moved every few years.
Read the full Wordwatch post here.
Copyright © 2026 RegTech Analyst
Copyright © 2018 RegTech Analyst
