You’re using WordPress, it was already known that features permalinks in WordPress that will help us with the link structure more friendly instead of using the link structure of dynamic pattern http://domain.com/?p=xx, instead we can use profiles topologies such as using permalink.
But such you are using a certain permalink structure that reversal, all the old links will fail 404. This means that, all your old rank on search engines like Google, Bing rank will be reduced by the link does not exist, because it has indexed (index) based on the old topology.
How to change permalink structure rankings unchanged?
Rank will be lost when that page is 404 (not found), so if you want to retain the rank of a certain link or want to share this rank for other links, you must use the technique 301 redirect (permanent redirect).
Should know : Error 404 kills website how are you?
For example on Google for a link A holding top 1 and now you want to specify a link B to the top 1 instead of the link A, then we will have to use a 301 redirect to redirect traffic from the link A to venture to B.
If you need to redirect the link of a page on which an individual may use 301 Redirection feature in SEO by Yoast or plugin SEO Redirection which they were introduced.
But suppose you have 1000 posts blog has the same structure you need to change this structure probably not crafted for that post in 1000, a solution is not easy the least. But do not worry, we have ways to place a 301 redirection from the old permalink structure to the new permalink structure for plugins Permalink Redirect .
Permalink permalink redirect the old to the new
First you download the plugin Permalink Redirect the machine and installed by going to Plugins -> Add New -> Upload .
If you’ve been using permalinks, you go to Settings -> Permalinks ‘ll see the permalink structure is declared through keywords like this.
Customize permalinks for WordPress
At the Custom Structure, you will see the structure of your current permalink. Assuming he would need to change to the new structure is /%postname%.html(already set in Settings), then we will put Permalink Redirect redirect for the following plugins ( Settings -> Permalink Redirect ).
And now you can try on old permalink structure will find it automatically redirected to the new permalink structure. Very easy, right?