<p>You don&#39;t lose that history when someone leaves, because it never lived with them. It lives with the model.</p> <p>Every export is versioned and compared element by element. So the column shows up as a change, tied to the version it first appeared in, not to someone&#39;s memory of it. Whoever picks up the file can see what moved and when without asking around.</p> <p>Here&#39;s how you trace it:</p> <ol><li>Open the project view and find the export where the column first changed.</li><li>Compare that version against the one before it, element by element. The column is right there in the diff.</li><li>Check the issue pinned to that element. It carries a screenshot, a tagged user and the model commit that made the fix.</li><li>Read the 6am digest history for that owner to see what they were assigned and when.</li><li>Hand the next coordinator the same record. They see the chain, not a rumour.</li></ol> <p>Why it matters on the job: the team stops spending 11 hours a week working out which version is current, and the coordination meeting runs 15 minutes instead of 90. The column gets resolved in the model, where a fix runs about $50, instead of surfacing in the field at $5,000 to $50,000.</p>