For connection elements such as screws, nuts, rings, pins, etc. the cutting in the 2D view may be excluded.
In image 1 below you can see that with activation of the respective classification attribute only the plate is cut and not the screw itself.
For desired projects, in PARTproject under Edit project -> General -> Classification > Attributes (CNS), the feature CNS_NOSECTION is set on 1. See Section 5.12.5, “ Add projects to classification (context menu) ” in eCATALOGsolutions Manual.