Ok, i tried again.
Downloaded the "one .po file" but the same is happening.

The first time it said:

The translation was successfully imported. There are 2000* newly created translated strings and 400* strings were updated.

* - cant recall exact numbers.

Then i imported the same file again and it said:

The translation was successfully imported. There are 2302 newly created translated strings and 517 strings were updated.

And again i imported the same file and it said:

The translation was successfully imported. There are 2302 newly created translated strings and 517 strings were updated.

But still, some of the stuff i know i have translated is still coming up in English when viewing the Portuguese version of the site.