<p>Yes. Every export version is versioned and diffed element by element, so each number in your estimate points back to the exact model revision it came from.</p> <p>Here is what happens. You publish straight from Revit or Navisworks. BidLight keeps one live record of the project inside the model. When something changes, costs update in real time. The owner sees the revision, not just the total.</p> <p>The steps you take:</p> <ol><li>Publish from Revit or the federated Navisworks model.</li><li>Let the export version. BidLight diffs it element by element.</li><li>Open the estimate. Each line item carries its revision and the geometry and metadata behind it.</li><li>Change the design. Costs update live, same record.</li></ol> <p>That means no more comparing PDFs side by side. No more two-hour meetings asking who changed the duct. And when the owner asks where a number came from, you show them. You win work with numbers you can defend.</p> <p>If you want the owner to see this directly, we can set up a demo.</p>