The same visitor sees the same variation tomorrow, next week, and next month
Funnel decisions get made over days, not minutes. A shopper browses on a phone on Monday and checks out on a laptop on Friday. Convert stores each visitor's variation assignment for up to 6 months from their last visit, so the result reflects one coordinated experience across the full journey — not a returning visitor randomly reshuffled into a different variation halfway through.
Source: Tracking cookies structure→