AppStore: Where to select which version to use from TestFlight when publishing an app?

Question

(See edit below) I have multiple builds in TestFlight. Now I want to release the last one to AppStore. Where do I select it? All I can see is this:

EDIT

I found out that when I released 1.0, Apple actually released one of the old builds instead of the last one (How is this even possible?! I submitted the app to review 2 days after last build was uploaded to TestFlight). So now the question is how I can apply the last build?

Here is the All Builds tab:

And here is the Build section for release 1.0 (nevermind release 1.1, I made it by mistake and can't find any option to delete it) :

Answer 1

The only possibility which exists is that there are no builds available for version 1.1
If you check the TestFlight tab, there should be builds for previous versions but not for version 1.1

Update :
There are two ways you can upload the build as per your comment : 1. Change version from 1.1 to 1.0 and upload build for 1.0 There is an option to change version on itunesconnect page only.
2. From Xcode, create build for version 1.1 and upload it. Then you'll see build on itunesconnect for 1.1 Having said that, this would skip version 1.0
But if 1.0 is your first release, you should go with option 1.

Following is the option to update the version from iTunesConnect :