Good article here:
https://magento.stackexchange.com/questions/37302/magento-redirects-to-old-website-regardless-of-what-changes-are-made
Some tips:
1. Delete the cache
2. Check the database connection info
3. Check base URL
Good article here:
https://magento.stackexchange.com/questions/37302/magento-redirects-to-old-website-regardless-of-what-changes-are-made
Some tips:
1. Delete the cache
2. Check the database connection info
3. Check base URL