Case: A migration runbook that moved 140 campaigns with zero tracking loss

Case: A migration runbook that moved 140 campaigns with zero tracking loss

A team switched trackers and feared losing data on 140 live campaigns. A cutover runbook with a parallel-run window made it clean.

Run this whenever you change tracking platforms.

Stage 1 — Prep (Owner: analyst)
☐ Map every old postback to a new one
☐ Rebuild offers and flows in new tracker

Stage 2 — Parallel run (Owner: analyst)
☐ Send conversions to both trackers for 72h
☐ Compare counts daily, gaps must stay under 2%

Stage 3 — Cutover (Owner: buyer)
☐ Switch campaign links in batches of 20
☐ Confirm first conversion on each batch

Trigger: tracker change decision.
Done-when: all 140 links switched, parallel data matched.

Result: migration completed in 5 days, conversion-count variance stayed at 1.3%, no rollback needed.

Save this. Run it every time.