private function parse_properties_to_set( $model_array ) {

		$llms_post = array(
			'post' => array(),
			'meta' => array(),
		);

		$post_properties       = array_keys( $this->get_post_properties() );
		$unsettable_properties = $this->get_unsettable_properties();

		foreach ( $model_array as $key => $val ) {

			// Sanitize the post properties keys by removing the 'post_' prefix.
			if ( 'post_' === substr( $key, 0, 5 ) ) {
				$_key = substr( $key, 5 );
				if ( in_array( $_key, $post_properties, true ) ) {
					$key = $_key;
				}
			}

			$val = $this->scrub( $key, $val );

			/**
			 * WordPress Post properties to be updated using the wp_insert_post() function.
			 *
			 * The 'edit_date' must be passed to the wp_update_post() function in order
			 * to allow 'drafty' posts' creation date to be modified.
			 */
			if ( in_array( $key, $post_properties, true ) || 'edit_date' === $key ) {

				$type          = 'post';
				$llms_post_key = "post_{$key}";

				switch ( $key ) {

					case 'content':
						/** This is a WordPress core filter. {@see kses_init_filters()}*/
						$val = stripslashes( apply_filters( 'content_save_pre', addslashes( $val ) ) );
						break;

					case 'excerpt':
						/** This is a WordPress core filter. {@see kses_init_filters()}*/
						$val = stripslashes( apply_filters( 'excerpt_save_pre', addslashes( $val ) ) );
						break;

					case 'edit_date':
					case 'ping_status':
					case 'comment_status':
					case 'menu_order':
						$llms_post_key = $key;
						break;

					case 'title':
						/** This is a WordPress core filter. {@see kses_init_filters()}*/
						$val = stripslashes( apply_filters( 'title_save_pre', addslashes( $val ) ) );
						break;
				}
			} elseif ( ! in_array( $key, $unsettable_properties, true ) ) {
				$type          = 'meta';
				$llms_post_key = $key;
			} else {
				continue;
			}

			/**
			 * Filters the property value prior to be set.
			 *
			 * The first dynamic portion of this hook, `$this->model_post_type`, refers to the model's post type. For example "course",
			 * "lesson", "membership", etc...
			 * The second dynamic part of this hook, `$key`, refers to the property name.
			 *
			 * @since Unknown
			 *
			 * @param mixed           $val       The property value.
			 * @param LLMS_Post_Model $llms_post The LLMS_Post_Model instance.
			 */
			$llms_post[ $type ][ $llms_post_key ] = apply_filters( "llms_set_{$this->model_post_type}_{$key}", $val, $this );

		}

		return empty( $llms_post['post'] ) && empty( $llms_post['meta'] ) ? false : $llms_post;
	}