Views can't display data of two identical subforms

Views can't display data of two identical subforms

Hi,

I need to use two subforms in a same parent Form. Those two subforms use the same form (there's just one column displayed alternatively [Stock-in and stock-out for example])
All works fine, except in the views. To display subform data : it's displayed in one column and is concatenated (like this : SubFormData1SubFormData2), instead of two separated columns (SubFormData1 | SubFormData2).

Even in XLS Export, I use exportDisplayData=false to have data in separate tabs, but it creates only one tab, with concatenated data in the second subform column and " " in the first one.

Cyril