Assembly hole feature missing on CATIA

[aleseg]

Hi

I have an assembly where there are some assembly holes, I mean an hole that is made directly inside the .catProduct because it passes through different parts of that assembly. Basically when you do an assembly feature, an icon appears at the bottom of the feature tree called "Assembly feature", where you find the feature and so you can modified it.
In my case I have the holes assembly but the "Assembly feature" voice on the tree is missing so I cannot modified that holes...
Anyone know why and how can I fix it?

Thanks.