GetList по сделкам

    CModule::IncludeModule('crm');
    $arReturn = array();

    $arOrder = Array("date_modify" => "desc");
    $arFilter = Array(
        "ID" => $ID,
    );
    $arSelect = Array();

    $rs = CCrmDeal::GetList($arOrder, $arFilter, $arSelect, false);

    while($ar = $rs->GetNext()) {
            $arReturn[$ar["ID"]] = $ar;
            $arReturn[$ar["ID"]] = \Bitrix\Crm\Binding\DealContactTable::getDealContactIDs($ar["ID"]);//Достаем контакты, участвующие в сделке
    }
    return $arReturn;