Switch Simplified Rep without redoing BOM Balloons with "Default Rep"

Hi, after reading those 2 topics :

Solved: Switch Simplified Rep without redoing BOM Balloons... - PTC Community

Redefine a master rep general view and convert it ... - PTC Community.

I tried it in Creo 8.0.4.0 and saw that the "Default Rep" was not available in my drawings (example pics 1 / 2) whereas any other representation that I created were accessible.

Picture 1 : View manager from my ASM file "A_SUPPV4854.asm" 

Picture 2 : From my DRW file "A_SUPPV4854.drw" 

Is there any other way of selecting it without redoing BOM Balloons ?

Thank you.