When inserting parts into an assembly, they will show up in every level of detail (LOD) until they are suppressed inside each LOD.
For instance:
Assembly A is a piece of equipment and has 10 LOD's showing different tooling used. If Part X is inserted into Asm. A it shows up in all 10 LOD's. Part X needs to be manually supressed in each LOD if it is not needed.
It would be nice to have a drop down list for Part X that would allow you to pick which LOD's it would be suppressed/unsuppressed for.