Stats Show Referrer from my Old Blog

301 and 302 redirects should normally preserve the original referral information, but this may not always work depending on how the redirects happen on your old Blogger blog.

If you’ve used a built-in feature in Blogger to create that redirection, I’d suggest getting in touch with the Blogger support team to find out more, and see if there is anything they can do to make referral information gets passed on to your new site.