Surfaces hidden after checkin

Hi,

I am using one 3D model to represent two parts (one with additional holes in it, using representations. 

For the two parts, they have different decals due to the number of holes. So I created a surface where the decal goes for each representation, However, every time I check in my part, the surface becomes "hidden". And so when I look at the part in a brand new session (after erase not displayed, or closing and opening creo 8), the decal doesn't appear right. I have to manually "unhide" the surface from the model tree, and then it shows up correctly. 

I have tried to check out, unhide, and check in. However, after closing the session and reopening, it reverts to the hidden surface. 

Any tips on what might be happening? 

Thanks!