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Hello,

I have one domain for my website (www.domain.com) where I receive all the new traffic and a subdomain (billing.domain.com) for the billing system.

Im tracking both in Analytics.

I have a goal (new order) configured in the subdomain -billing system-.

But when I want to track the source / medium of the goals (new orders) in billing.domain.com, always appears my main website (www.domain.com) as the referral.

Now I added in Analytics: Admin > Property > Referral Exclusion List, the www.domain.com and domain.com.

Do you think that now I can track the real referrer of the goals?

Or should I do a more complex tracking setup with Tag Manager ( https://support.google.com/tagmanager/answer/6106951 ) to pass the session cookies from a subdomain to another one, just to identify the real source / medium of the visitor?

Thank you

My website in "On Page Grade" received an A.Anyway, I only have 1 thing to optimize:_"Use Keywords in your URL__Using your targeted keywords in the URL string adds relevancy to your page for search engine rankings, assists potential visitors identify the topic of your page from the URL, and provides SEO value when used as the anchor text of referring links."_My website is ranking in top10 for a super high competitive keyword and all my others competitors have the keyword on their domain, but not for my URL.Since I can't change my domain for fixing this suggestion, I would like to know what do you think about doing a 301 redirect from / to mydomainname.com/keyword/So the index of my website would be the /keyword.I don't know if this can make a damage to my SERP for the big change ir it would be a great choice.

I will clean my backlinks removing those with low DA and keeping medium and high DA.

Since which number of Domain Authority is good to focus my efforts?

Thanks!