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Thanks for your feedback, I realized after I posted my question that it was pretty vague description of what we are doing. But thanks for answering, this will help me for sure.

We have a site that was at a 32 domain authority in December, and our competition as usually been about a point or two behind us. But since December, we have fallen a point or two after each index and are now at the point of 26 and our competition is up to a 33. The competition did fall a point or two but were able to regain what they lost.

We publish original content blogs over 600 words per blog targeted at our audience twice a week and post to all of our social media channels and have guest blogged linking back to our site. We also updated the look of our site to be mobile responsive to comply with Google's mobile indexing. I did find some spam feed burners linking to our site over 4,000 times and have since disavowed those links.

Has anyone experienced a decline in domain authority in the past few months and have you been able to turn it back around? Is there something that we should look at fixing or something we are missing that could help bring our numbers back up?

There will be one main domain that will act as a landing page for the three divisions.

I am getting divisions that will be starting on a new domain name.

A company I am doing SEO work for is splitting into 3 and will be hosted on three separate domains. I am getting 2 of the 3, however, I am not getting the domain that has most links going to it.

What is the best practice to carry any link juice going to my divisions to the new domain names? Should I contact sites linking to my divisions content on the old site and ask them to link to my new sites? Should I do 301 redirects to help carry links to my new sites?

Also, I found this guide in moz http://moz.com/blog/seo-guide-how-to-properly-move-domains its from 2009, but is this still considered the best practices for moving to new domains or is there an updated guide I should be using?