Carry Forward from Multiple Source Questions #10925
Description
We need carry-forward functionality that can aggregate choices from multiple source questions (not just one). Current behavior only supports picking choices from a single question, forcing workarounds.
Goal
Allow a target question to present choices combined from several source questions, with configurable filtering and de-duplication.
Requirements
Source selection: allow specifying multiple source questions (e.g., a radio group and a checkbox question).
Aggregation: combine selected choices from all sources into a single choice set for the target question.
Example use case
Source A (radio): “Select your favorite drink” - value = coffee.
Source B (checkbox): “Select your favorite drinks” (the coffee options is excluded) - values = [tea, soda].
Target question should show [coffee, tea, soda] (checkbox answers)