<p>That $3,200 question is the one you answer in a meeting for nothing: what changed, who moved it, what it&#39;s costing you. Someone in the room usually knows. Nobody has the record.</p> <p>You lose the answer twice. Once in the two hours the coordination meeting spends finding out who moved a duct. Again when you produce the takeoff from scratch because the model moved and the numbers didn&#39;t.</p> <p>BidLight keeps that record. It runs inside Revit and Navisworks, so you publish straight from the model or federated model. Every export is versioned and diffed element by element. Issues roll up by 6am with a digest of what you own, daily.</p> <p>So when the GC asks what changed, you already have it.</p> <p>If you want to stop answering that question for free:</p> <ol><li>Publish your next export from Revit or Navisworks.</li><li>Let BidLight diff it against the last version, element by element.</li><li>Check the 6am issue digest instead of hunting Teams, email and Bluebeam.</li><li>Hand the change history to the person asking.</li><li>Bill the estimate work you were doing for free.</li></ol> <p>The question isn&#39;t free. It costs $15K to $50K a week in idle field labor when a clash sits unresolved. Plans run from Basics at $260 per license per year to Max at $590.</p>