WordPress at a glance
filter is not described

woocommerce_admin_preload_settings filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_admin_preload_settings', 'filter_function_name_7120' );
function filter_function_name_7120( $array ){
	// filter...

	return $array;
}
$array
-

Where the hook is called

Loader::add_component_settings()
woocommerce_admin_preload_settings
woocommerce/packages/woocommerce-admin/src/Loader.php 1075
$preload_settings = apply_filters( 'woocommerce_admin_preload_settings', array() );

Where in WP core the hook is used WooCommerce

woocommerce/packages/woocommerce-admin/src/Features/Onboarding.php 219
add_filter( 'woocommerce_admin_preload_settings', array( $this, 'preload_settings' ) );