Huge regression where cart item attributes are missing cart transform function

[Andrew_Jaanuu]

See Regression: line item attributes no longer visible after placing an order · Issue #586 · Shopify/function-examples · GitHub, there is a recent shopify update which made all line item attributes disappear for a line item with cart transform expansion applied after checkout. It used to work properly until recently. We need this to be fixed before we launch next month.