Redirect eats direct label, how to fix?

Question

htaccess

The site has a redirect from pages with a slash to pages without a slash

Options +FollowSymLinks
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_URI} ^(.+)/$
RewriteRule ^(.+)/$ /$1 [R=301,L]

When a user comes from direct, the following happens: my-site.com/?yclid=234 changes to my-site.com?yclid=234 - that is, the slash disappears, what should I do in this situation?

Answer 1

the problem is that only RewriteCond can work with QUERY_STRING
RewriteRule itself cannot work with GET, but you can work on passing it through QSA
See how it works here:

RewriteCond %{REQUEST_FILENAME} !^favicon\.ico
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ index.php [L,QSA]