The way you worded your original post, it sounded like the redirected page is to a domain other than the one you're currently indexing. That's not the case?
If you're wondering why phpdig won't index something whose redirection is coming from a meta refresh, there's nothing in the documentation that says phpdig will follow such a link. What you can do though to get that page indexed is just specify its full path in your index administration process. Or else you can just include a normal link to it on your site so phpdig will pick it up.
Hope this helps.
