[jissey]

re,
j'ai pas regardé dans le détail, mais il faut refaire le test du page_alias dans tout les cas de figures, sauf sectionheader et separator.
Autrement dit, à chaque fois que le lien va être généré, il faut refaire le test

Code :

[== PHP ==]
{if $node->parent == true or $node->current == true}
  {assign var='classes' value='menuactive'}
  {if $node->parent == true}
    {assign var='classes' value='menuactive menuparent'}
  {/if}
  {if $node->children_exist == true and $node->depth < $number_of_levels}
    {assign var='classes' value=$classes|cat:' parent'}
  {/if}
  <li class="{$classes}">
    <a href="{$node->url}"
      {if $page_alias == 'infos_adherents'}
          class="{$classes} notification" data-notification="{last_blog}">
      {else}
          class="{$classes}">
      {/if}
    <span>{$node->menutext}</span></a>

{elseif $node->children_exist == true and $node->depth < $number_of_levels and $node->type != 'sectionheader' and $node->type != 'separator'}
{if $page_alias == 'infos_adherents'}
          <li class="parent"><a href="{$node->url}" class="parent {$classes}" data-notification="{last_blog}"><span>{$node->menutext}</span></a>
      {else}
         <li class="parent"><a href="{$node->url}" class="parent"><span>{$node->menutext}</span></a>
{/if}
{elseif $node->current == true}
<li class="currentpage"><h3><span>{$node->menutext}</span></h3>

{elseif $node->type == 'sectionheader'}
<li class="sectionheader"><span>{$node->menutext}</span>

{elseif $node->type == 'separator'}
<li class="separator" style="list-style-type: none;"> <hr />

{else}
{if $page_alias == 'infos_adherents'}
<li><a href="{$node->url}" class="{$classes} notification" data-notification="{last_blog}"><span>{$node->menutext}</span></a>
{else}
<li><a href="{$node->url}"><span>{$node->menutext}</span></a>
{/if}
{/if}