HTACCESS redirect vs. forwarding

[triple9]

I'm having trouble using htaccess redirect to redirect a subdomain to a new domain on a different server.  Tech support at godaddy suggested I forward the subdomain.  The subdomain has already been cached by google.  Will forwarding in this way have the same affect (SEO wise) as an htaccess redirect??

[Highland]

It depends what they meant by "forward". Are they offering some sort of redirect or are they talking about, say, making your subdomain use a DNS CNAME to do it? If it's the CNAME, I'd not do it.