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If the flag is ON then we’ll see the simplified version of this list (the most common that we are using today):
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To have premium options are sorted in the first position inside Combo Slot
As stated in this document, to have the premium options in first position, we have a new feature flag (enable-premium-options-at-first-position) that depends on the enable-product-upsell-simplified (that needs to be ON).
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