Cscart 301 redirect to Opencart - .htaccess

Question

i am trying to redirect from a Cscart url to a Opencart url but it seems that it does not work.
Old url (cscart)
https://www.example.com/index.php?dispatch=categories.view&category_id=1430
new url (opencart)
https://www.example.com/index.php?route=product/category&path=1746
I want to do this manual for the first 10 main categories and all other subcategories from cscart to redirect to the https://www.example.com home page.
How can i succeed this?
Also, the new url uses https.
Thank you in advance
-Konstantinos

Answer 1

A simple, manual way would be
RewriteCond %{QUERY_STRING} dispatch=categories.view&category_id=1430
RewriteRule ^index.php$ /index.php?route=product/category&path=1746 [R,L]
and so on for all other category mappings.
An alternative could be to capture the old category_id and use it with RewriteMap in the RewriteRule substitution URI
RewriteMap categories txt:/path/to/categories.txt
RewriteCond %{QUERY_STRING} dispatch=categories.view&category_id=(\d+)
RewriteRule ^index.php$ /index.php?route=product/category&path=${categories:%1} [R,L]
And in the file categories.txt, you would have a mapping from old to new category ids
1430 1746
123 456
987 333
See also txt: Plain text maps for more details, or alternatives to plain text mappings.
The drawback of this method, you cannot use it in an .htaccess file, only in the main configuration or virtual host section.
When everything works as it should, you can change R to R=301.