Organic keywords have dropped significantly in a short time period when relaunching site, but all 301 redirects are working properly.

[grapevinemktg]

We redesigned a site and relaunched it on the same domain. All 301 redirects were completed and are working properly. Around the same time, they fired an seo company who was published inbound links to their site on spammy directories (and this was during the same time period that Google's Hummingbird algorithm change took place). After the website relaunch, their keyword rankings fell off dramatically; and in all of our research, we're not seeing what has caused this issue. I'm not seeing any red flags in their moz reports or even in their google analytics traffic; but organic keywords are way down, and now leads from organic traffic are also way down.

Help??

[KevinBudzynski]

As you know, many reasons could lead to the drop. I would focus on:

1.) Link Profile: Examine your link profile and try to eliminate any spammy inbound links (email the webmaster/disavow)

2.) Does the landing page closely match on the previous site? If the 301's do work, but content is dramatically different, it will likely cause a drop in organics for that kw.

Good luck!