gpnf-disable-sessions.php: Fixed an issue where nested form fields are not dynamically populated.
#907
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Context
⛑️ Ticket(s): https://secure.helpscout.net/conversation/2721901699/72085
Summary
The
gpnf-disable-sessionssnippet prevents parameter-based dynamic population from functioning in the child form. The request vars are stored in the session and then used to populate the nested form field. Since this snippet disables sessions, the dynamic population won't work, hence the issue.The fix here is to store the request vars in a cookie and use it to populate the nested form fields.