Independent arguments for View Page and Attachment
Personally, if you just want some content from the node at the top of a view, I'd override the Views template.

Then, in that template just use the following code to get the content:

&lt;?php if (is_numeric(arg(2)) : ?&gt;
  &lt;?php $node = node_load(arg(2)); ?&gt;
  &lt;?php print $node-&gt;content; ?&gt;
&lt;?php endif; ?&gt;


I'm pretty sure you can get attachments to inherit arguments, but they can't be used independently; all arguments will always affect the parent view.

If you have to use a view, you can always do as above, create a template, then create a 'new' view; then, embed that view inside the other using:

&lt;?php print views_embed_view('viewname', 'displayname', arg(2); ?&gt;


This will manually pass the third argument into the embedded view.