3D Extruded Shape Not Updating from Library

The Problem:

Below is an example of a component which does not match the part in the Library and Altium does NOT detect the difference.

Here's the part on the PCB.

Here is the part in the Library

As shown I have added a polarity mark in the 3D body using a small white triangle.

Also the part appears in the Libraries Panel with the polarity mark shown.

However selecting the Component and updating from Libraries finds NO differences.

No Differences Found

Apparently finding differences does not include extruded shapes in a 3D Body.

The Workaround:

Open the footprint *.PCBLIB file then using the PCB Library Panel Update the PCB with the footprint.

Problem Solved:

That's it

3D Snap Points

For Circles, Cutouts, Holes

How do I get a snap point in the middle of a circle? - Altium Wiki

Interesting technique for cutouts, however it can be difficult to get the snap point precisely located at the center of the circle.

For Rectangles and Squares

To place a snap point at the midpoint of a rectangle or square two vertices need to be selected.

Example DE9 Connector Pins

Press the 3 key to switch to the 3D view.

Tools > 3D Body Placement > Add Snap Points from Vertices

Follow the user prompts on the status bar at the bottom of the active window.

1. Select Step Model Body
2. Press Space Bar to enter the pick two vertices mode
3. Select 1st Vertex
4. Select 2nd Vertex

Press Esc Key to Exit Snap Point Placement.

Select the 1st vertex


Select the 2nd vertex diagonal to the 1st vertex.

Result - Snap point is centered between the selected vertices.

Press Esc Key to Exit the Snap Point Placement mode.

Press the 2 key to return to the 2D view.
Press M > S for Move Selection.