Issues with imported strings

Hi.

I would like to talk about issues with imported strings.
Sometimes some strings already translated appear, with IMPORTED instead of
an author.
Where do these translations come from?
I don't know about other languages, but in pt-BR almost all of them come
with errors and need to be fixed.
Personally, I would prefer that these strings be left empty to appear in
the "Missing" filter.
But since many of them already exist, Pontoon could add an option to
include 'IMPORTED' in the translation author filter to make it easy to find.

Marcelo