Wordpress seo help need?

3 months ago I lunched on of my site and a few days back.I got rank on 1st page.I was not using CMS.Now I migrate my site to WP.But problem is one of my post which got rank has (.html has 30 backlinks) in extension while when I post it in WP it show (-html has 0 backlink) index in Google.I tried to change it with (DOT) but it don't work. here you can see actual problem by yourself.
https://www.google.com.pk/#psj=1&q=site:livecricketstreaming24. com&start=0

when I click on both post they go to one place at

My question is should I remove 2nd post which don't have rank and backlinks.Because I am afraid google consider it Duplicate contant

Give me you suggestion

Sorry moderator If post it in wrong category.You can move it at suiteable place

 

Try going back to what you had. Maybe this can solve your problem.

 

You need to ABSOLUTELY keep the same links after you migrate to a new platform (CMS). Also, you don't want to have two identical pages or posts because it's duplicate content (you're right there). At least, consider using rel=canonical or just 301 redirect.

 

I'd recommend a 301 redirect, or simply set the permalink so you are able to achieve the exact same url.

Never have two identical pages. =)

 

I checked my previous ulr redirect to new post according to software.It show 301 type of redirction.Should I removed my news url from Google because both have same structure and contant.

 

If you have a redirect in place, it will simply take Google some time to index the new content.
If, when you type in the old permalink into a browser, you get redirected to the new permalink (-html), then just chill and wait a bit before you check links again.