2D Shapes Connection Points and Resizing

[Chance0066]

I imagine there is a simple solution to this problem, but I can not seem to figure it out. I have a series of 2D Shapes that have connection points on each end. This allows me to easily lay out a complete line of pipes. However, when I select several pieces at once and re size them to make them larger, the connection points cause the shapes to move around and become misplaced.

I tried putting together two of the exact same layouts where one uses connection points and the second one does not, and the one with out connection points works fine. If anyone could help me out with this it would be much appreciated.