Record source IDs, recording timestamps and frame references for key relationships. Keep confirmed facts, proposals and unresolved questions separate. Reference diagrams can inform presentation, while the relationships in the new diagram need support from the current material.
Use the operating overview for inputs, state changes, branches and loops. Move complex branches to detail pages. Native Draw.io nodes and connectors keep the diagram editable.
The Chinese PDF guide uses a generic example to explain source review, diagram structure, page checks and delivery of matching versions.