A couple options come to mind: either create those pages and build them similar to when they had the plugin (assuming it was a plugin) or 301 those 404 links to the new pages. When doing the 301s I suggest you create a spreadsheet that outlines all of the 404 to 301 mappings and show that to the client so that they are aware of the issue(s), which can help explain why their traffic is taking a hit. I hope that helps!
Best posts made by GoogleDowner
-
RE: Understand how site redesign impacts SEO
-
RE: Our site is on a secure server (https) will a link to http:// be of less value?
Doesn't really matter what moz shows it matters what Google does. Google typically looks at http and https as separate sites. Same with www and non-www. As he mentioned above pick one and build authority around it. Since HTTPS is now a ranking signal I would stick with that one.
-
RE: How does switching to HTTPS effect Google Analytics?
Yeah Microsoft, for some reason, likes to make things a little more complex than it needs to be. Here are a couple of links I found that might help:
http://www.iis.net/configreference/system.webserver/httpredirect
http://forums.iis.net/t/1190228.aspx?Specific+url+301+redirection