GravityView - Trigger the `gform_after_submission` action when an entry is edited, but ONLY for Form #12.

gravityview-trigger-gform_after_submission-form-12.php

<?php

/**
 * GravityView doesn't trigger the `gform_after_submission` action when editing entries. This does that, 
 * but ONLY FOR FORM #20.
 * 
 * @param array $form
 * @param int $entry_id ID of the entry being updated
 * @param GravityView_Edit_Entry_Render $object
 * 
 * @return void
 */
function gravityview_trigger_gform_after_submission_form_20( $form = array(), $entry_id = array(), $object ) {
  
	// Only trigger for Form ID #20 - update with your form ID
	if( 20 !== (int) $form['id'] ) {
		return;
	}
  
	gf_do_action( array( 'gform_after_submission', $form['id'] ), $object->entry, $form );
}

add_action( 'gravityview/edit_entry/after_update', 'gravityview_trigger_gform_after_submission_form_20', 10, 3 );