Labels from spaces does not appear when creating Drawing Extraction

Hi,

I am using Aecosim SS6 Ver. 08.11.09.829 Via Projectwise SS4 I am working on a MEP project and I am now creating sheet. I am using Drawing Extraction Manager to create my sheet and I used the "Process a Reference Group Model" option but when I open my extracted file, space labels are not included. What am I missing?

Thanks,

Vince