Preload the form but do not echo it out. This is important for making sure all CSS/JS gets enqueued if enqueueing logic during the form.
This addition was necessary for compatibility with GP Populate Anything’s Live Merge Tags.
Filter preloading form for all Nested Forms.
add_filter( 'gpnf_preload_form', '__return_true' );
Filter preloading for specific Nested Form.
add_filter( 'gpnf_preload_form_FORMID', '__return_true' );
Whether or not to pre-load (but not echo to document) the form.
The current form.
This filter is available since Gravity Forms Nested Forms 1.0-beta-9.4.