Why is the wrong EXT from the menu being picked up?

Question

1C-Bitrix

Good afternoon. A question.
I have a catalog menu on the main page of the site.

<?$APPLICATION->IncludeComponent(
  "bitrix:menu", 
  "main", 
  array(
    "ROOT_MENU_TYPE" => "catalog",
    "MAX_LEVEL" => "1",
    "CHILD_MENU_TYPE" => "",
    "USE_EXT" => "Y",
    "MENU_CACHE_TYPE" => "A",
    "MENU_CACHE_TIME" => "604800",
    "MENU_CACHE_USE_GROUPS" => "Y",
    "MENU_CACHE_GET_VARS" => array(
    ),
    "SHOW_EMPTY" => "Y",
    "DELAY" => "N",
    "ALLOW_MULTI_SELECT" => "N"
  ),
  false
);?>

Its ext is called like .catalog.menu_ext

<?
    global $APPLICATION;
    $aMenuLinksExt=$APPLICATION->IncludeComponent("bitrix:menu.sections", "", array(
  "IS_SEF" => "Y",
  "SEF_BASE_URL" => SITE_DIR,
  "SECTION_PAGE_URL" => "/catalog/#SECTION_CODE#/",
  "DETAIL_PAGE_URL" => "/catalog/#ELEMENT_CODE#.html",
  "IBLOCK_TYPE" => "catalog",
  "IBLOCK_ID" => "16",
  "DEPTH_LEVEL" => "3",
  "CACHE_TYPE" => "A",
  "CACHE_TIME" => "36000000"
  ),
  false,
  array(
  "HIDE_ICONS" => "N"
  )
);

$aMenuLinks = array_merge($aMenuLinksExt, $aMenuLinks);
?>

There is also a page on the site that uses a different template, but also a menu. The only difference is the URL.
Here is the menu of this second page

<?$APPLICATION->IncludeComponent(
  "bitrix:menu", 
  "main", 
  array(
    "ROOT_MENU_TYPE" => "mobile",
    "MAX_LEVEL" => "1",
    "CHILD_MENU_TYPE" => "mobile",
    "USE_EXT" => "Y",
    "MENU_CACHE_TYPE" => "N",
    "MENU_CACHE_TIME" => "604800",
    "MENU_CACHE_USE_GROUPS" => "Y",
    "MENU_CACHE_GET_VARS" => array(
    ),
    "SHOW_EMPTY" => "Y",
    "DELAY" => "N",
    "ALLOW_MULTI_SELECT" => "N"
  ),
  false
);?>

Its ext is called .mobile.menu_ext.php

<?
    global $APPLICATION;
    $aMenuLinksExt=$APPLICATION->IncludeComponent("bitrix:menu.sections", "", array(
  //"IS_SEF" => "Y",
  //"SEF_BASE_URL" => SITE_DIR."mobile/menu/",
  "ID"=>$_REQUEST["SECTION_ID"],
  "SECTION_URL"=>"mobile/catalog/?SECTION_ID=#ID#",
  //"SECTION_PAGE_URL" => "/mobile/catalog/?SECTION_ID=#SECTION_ID#",
  "DETAIL_PAGE_URL" => "/mobile/catalog/#ELEMENT_ID#.html",
  "IBLOCK_TYPE" => "catalog",
  "IBLOCK_ID" => "16",
  "DEPTH_LEVEL" => "3",
  "CACHE_TYPE" => "N",
  //"CACHE_TIME" => "36000000"
  ),
  false,
  array(
  "HIDE_ICONS" => "N"
  )
);

$aMenuLinks = array_merge($aMenuLinksExt, $aMenuLinks);
?>

The problem is that when I click reset cache on the main page my mobile menu is picked up. When I go to the directory with the mobile menu, I click reset the cache, the main menu is picked up. Why so and what to do?