- Upsell 1
- Upsell 2
- Upsell 3
- Upsell 4
- Receipt
U4 Collagen is skipped in this funnel
Collagen is the entry product, so the Collagen add-on (U4) and its downsell (DS4) never show here. Duplicate suppression sends every buyer from U3/DS3 straight to the order summary.
Skip fixture: u4 → already-bought:collagen; DS4 never opens. The same rule skips U3 when Matcha was accepted at U2 or its popup (test arm B).