Removing a main PartBody

Normally it is not possible to remove a main PartBody of a CATPart. Delete function is not active for this body (Fig.1).

Fig.1

To delete it, a new PartBody has to be defined. To define a new PartBody, go to Insert > Body, click RMB on the new body, expand the last position and choose Change Part Body (Fig.2). A previous PartBody can be now deleted.

Fig.2