Issues with emojis

Hi guys!

I have a problem with the emojis issue. 

I made a migration from vbulletin and the emojis are not displayed.  That is, the short code is displayed.

When I edit the post, it shows automatically. But I can't be doing this with all the posts: -_-'

Any way to force to show the emoticons in previous post?

PS: Yes, they are added in the platform and with the indicated shortcodes.