遗留系统过渡场景: controlled and traceable delivery
`legacy-visio-vsd-pdf` is designed for 遗留系统过渡场景. The focus is consistent readability, version clarity, and rollback-ready traceability rather than one-off conversion speed. Use pilot validation, staged rollout, and anomaly logging to prevent quality drift.
Legacy cutover: dual-track window, frozen engine, rollback plan
- Inventory systems that still ingest .vsd, set a hard cutover date, and freeze the server LibreOffice build and export flags. Any engine upgrade must pass golden-file regression first so mid-migration layout drift has an owner.
- Convert peak-complexity pages and compare visually to prior archived PDFs or scans; classify differences as source edits vs renderer changes before choosing fix-source, waiver, or pause.
- Tag assets as “PDF-only consumers” vs “still needs VSD,” split permissions, and broadcast checksums plus download entry points on switch day—personal drive copies should be discouraged for auditability.
VSD to PDF (legacy) FAQ
During dual-track, people keep editing .vsd—how do we stop diverging from published PDFs?
Lock who may touch masters and the moment PDF becomes authoritative; bind work items to version ids so every .vsd change triggers a fresh PDF and notification, otherwise downstream systems keep stale pictures.
What should training stress versus a pure Visio shop?
Explain font substitution, flattened themes, and static data links; teach inspection at agreed zooms instead of assuming pixel parity with native Visio.
After the window closes, some users still cannot open PDFs—what is the break-glass path?
Keep read-only VSD cold storage and the last good PDF, offer an approved viewer bundle or virtual desktop, and route corrupted files through repair—do not extend dual-track indefinitely without governance.
Global teams disagree on the freeze instant—how do we align?
Publish the freeze in UTC (or HQ time) with per-region confirmed hash lists; after the cutoff, new work gets new ids—verbal “wait one more day” collapses global consistency.
Auditors ask why PDF instead of long-term VSD—what is a defensible answer?
Cite uniform readers, reduced macro risk, and predictable rendering while still retaining cold .vsd and checksum evidence; align the narrative with written policy so oral explanations cannot contradict it.