Yeah, Noah, I’ve sent to Compressor and it really helped. There’s a checkbox in video options to “add clean aperture information” and it solves the problem by now. Thanks!
However, this workflow modified another settings that was ok on FCP native exporting… But i’ll keep going, step by step.
And I agree with you about the non-standard question of “Clean Aperture” in broadcast. The problem is that they just want identical file’s infos, and did not seem to be worried about nothing more than that.