nginx included file not relaoding properly

Question

I am using Linux azure box for PHP application. In my /etc/nginx/sites-available/default file I have added one file containing set of redirections. See code below,

include /home/site/nginx_redirections.txt;

And nginx_redirections.txt contains content like below(more than 500 redirections),

location /one {
   return 301 https:example.com/oneredirect.html;
}
location /two {
  return 301  https:example.com/tworedirect.html;
}

nginx_redirections.txt will change once in every month. But after changing new redirections are not reflecting. I am getting file not found error even after reloading nginx.

Can someone help me to resolve this issue? Thanks in advance