Need Regex To Handle Double Question Marks

I have several 404 links that need to be redirected.  They are from an external source so I don't have the control to change the links.  So I am wanting a rewrite rule for htaccess I can use.

Here is a sample of the original link:  http://www.abc.com/index.php?controller=product?pageid=444

Here is what it should look like:  http://www.abc.com/index.php?controller=product&id_product=444

This is the rewrite I am trying but it doesn't match.  Neither does the other option which escapes the ? in the rewrite rule.

RewriteCond %{QUERY_STRING} ^controller=product?pageid=444$ [NC]
RewriteRule ^/index\.php$ /index.php?controller=product&id_product=444? [R=301,L]

RewriteCond %{QUERY_STRING} ^controller=product?pageid=444$ [NC]
RewriteRule ^/index\.php$ /index.php\?controller=product&id_product=444? [R=301,L]

Please tell me what I am doing wrong in the regexes I have.

Thanks,
sharingsunshineAsked:
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ozoCommented:
Did you try escaping the ? in RewriteCond?
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sharingsunshineAuthor Commented:
I just now tried it but there was no change.  So I then escaped the ? in the rewrite rule and that made no difference either.
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wilcoxonCommented:
Are you sure the variable contains controller=product?pageid=444 and not just pageid=444?  That would be my first thought.

How did you try escaping question mark?  Did you try replacing it with %3F?  That would be my second thought.

I'm not familiar with htaccess regex redirects so this may be a dumb question.  Have you tried removing the ^ from the beginning of the regex (which would only fix it is the var contains the full URL and not the portion after the question mark)?
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InsoftserviceCommented:
I hope you want to redirect 404 pages only.

RewriteEngine on
ErrorDocument 404 /index.php
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sharingsunshineAuthor Commented:
I found another source and this is what they gave me which works.

RewriteCond %{QUERY_STRING} controller=product
RewriteCond %{QUERY_STRING} pageid=([0-9]*)$
RewriteRule ^(.*)$ /index.php?controller=product&id_product=%1 [R=301,L]

No, these are actual product pages.  Hence, why I have the two parameters that I want to redirect to.
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