Bilingual file excel - enabled to be used in Trados Studio

Good morning,

I have to elaborate my bilingual excel file in Trados Studio (col A = original; col B = translated). 

I tried to set bilingual file, move it up, but nothing helped.

I tried also to change the format from xlsx to xls, but nothing. 

Result: 

In 1. segment I see ORIGINAL (col. A) in source and also in target

In 2. segment I see TRANSLATED (col B) in source and also in target.

Ex.

seg. 1. ORGINAL (source)     ORIGINAL (target)

seg. 2. TRANSLATED (source)    TRANSLATED (target)

Thank you for any help!