I have 2 domains running in parallel say abc and xyz. Here our company has decided to change the abc to some new branding xyz. so for that we have taken the entire content from the abc server and hosted new website xyz with same content and we have successfully redirected abc to xyz without any trouble. But the internal pages of abc/about, abc/contact etc are not redirecting. This entire is hosted with wordpress. I have tried with some online tutorials with .htaccess tricks. Nothing works for me.

Here one thing need to notice is both abc and xyz are running in parallel. Means if you open abc then it redirects perfectly to xyz but if i open abc with their internal pages then its not redirecting. So my question is do i need to completely remove the abc and its content and database from the server or it can be managed with simple .htaccess tricks.

Please let me know the solution.

Thanks.