<p>&quot;Done&quot; in a coordination meeting is a claim. Proof is a record. The difference is who can tell you what changed and when.</p> <p>Here is what you should know.</p> <ol><li>Every export gets versioned. You can open any version and see the model as it stood that day.</li><li>Every version is diffed element by element. You see the duct that moved, not a PDF you eyeball.</li><li>Issues land by 6am, so the person who owns each one knows before the meeting starts.</li><li>A daily digest tells you what you own, so nothing sits in Teams or email waiting to be found.</li></ol> <p>The win is simple. Your coordination meeting stops being two hours of &quot;who moved this and why&quot; and becomes a list of decisions. And when a clash sits unresolved, you can point at the week it slipped. That is $15K to $50K in idle field labour every week, per the math on BidLight&#39;s own site.</p> <p>Proof is not paperwork. It is the thing that lets you defend the number.</p>