<p>It holds up because every claim points to an element in the model, not to someone&#39;s memory. When a GC or owner pushes back, you open the comparison and show exactly what moved.</p> <p>Most value engineering sessions get stuck because nobody can say which version a number or a drawing came from. BidLight keeps one record. Each publish is a snapshot with its own files, author and milestone. You compare any two revisions element by element and filter by category.</p> <ul><li>Every change has a trace. You point to the element, the revision and who published it.</li><li>Issues stay pinned. They carry the sheet and revision that raised them, so nobody argues about which version it was.</li><li>Resolutions are proven. A closed issue has a screenshot, a tagged user and the linked model commit.</li></ul> <p>The model and the record stay in sync because the record is built from the model. That is the difference: a decision you can defend as the design changes, not one you rebuild from emails after every meeting.</p>