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    <p>The <a href="http://httpd.apache.org/docs/2.2/mod/mod_alias.html#redirect" rel="nofollow noreferrer"><code>Redirect</code></a> directive does only work with the <a href="http://httpd.apache.org/docs/2.2/mod/directive-dict.html#Syntax" rel="nofollow noreferrer">URL path</a> but not the host or query of the URL.</p> <p>But it is possible with <a href="http://httpd.apache.org/docs/2.2/mod/mod_rewrite.html" rel="nofollow noreferrer">mod_rewrite</a>:</p> <pre><code>RewriteCond %{HTTP_HOST} =example.org RewriteCond %{QUERY_STRING} =id=1 RewriteRule ^default\.asp$ http://www.example.org/newpage.html [NC,L,R=301] </code></pre> <p>And as already said in the comments, you can use a <a href="http://httpd.apache.org/docs/2.2/mod/mod_rewrite.html#rewritemap" rel="nofollow noreferrer">rewrite map</a> for the ID-to-alias mapping:</p> <pre><code>1 foo-page 2 bar-page 3 baz-page … </code></pre> <p>The <code>RewriteMap</code> declaration (here a simple plain text file):</p> <pre><code>RewriteMap id-to-alias txt:/absolute/file/system/path/to/id-to-alias.txt </code></pre> <p>And finally the application:</p> <pre><code>RewriteCond %{HTTP_HOST} =example.org RewriteCond %{QUERY_STRING} ^(([^&amp;]*&amp;)*)id=([0-9]+)&amp;?([^&amp;].*)?$ RewriteCond ${id-to-alias:%3}&amp;%1%4 ^([^&amp;]+)&amp;(.*) RewriteRule ^default\.asp$ http://www.example.org/%1.html?%2 [NC,L,R=301] </code></pre> <p>That should also preserver the remaining query. If you don’t want that:</p> <pre><code>RewriteCond %{HTTP_HOST} =example.org RewriteCond %{QUERY_STRING} ^(([^&amp;]*&amp;)*)id=([0-9]+)&amp;?([^&amp;].*)?$ RewriteCond ${id-to-alias:%3} .+ RewriteRule ^default\.asp$ http://www.example.org/%0.html? [NC,L,R=301] </code></pre>
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    1. PORedirect pages from old to new site - one by one
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    1. COSo basically I would need two lines per page? One with the RewriteCond matching the id and one with the RewriteRule making sure to send the user to the right page? And conclude with a [L]? Am I finally on the right path?
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    2. COIn general, yes. But you can use a rewrite map to store the ID-to-alias mapping (see http://httpd.apache.org/docs/2.2/mod/mod_rewrite.html#rewritemap).
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    3. COAnd for the help of others: The RewriteMap declaration can only go into the httpd.conf - don't bother putting it into the .htaccess as I did just now.
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