Structures not visible in 3D view

In some drawings, you may experience an issue where pipe network structures are visible in plan view but they are not visible in 3D view, see images below:

Plan view

3D view (only one structure using a different style is visible)

The first two fixes you should try are:

1. Turn on all the relevant layers

2. Make sure that the structure style displays objects in a 3D view

If none of the above helps, then try the following workflow:

1. Swap structures to a different structure family

2. Delete corrupted structure family from a part list

3. Import structure family again

4. Swap structure to reimported structure family

For detailed steps, watch the video below: