Can't execute php files in wordpress directory

Question

Here is my problem. I have a wordpress site, and I'm trying to make a file to migrate data from one database to another. So I have migration.php in wordpress root folder, but when I navigate to that file, I get error 404 Page Not found from Wordpress. I have tried different .htaccess fixes, but no luck my .htaccess looks like this

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress

Answer 1

It is file permissions or .htaccess settings that may cause that. In addition you should be sure that file is present in real filesystem path.