Flexible components become inactive when dragging and in mechanisms

This is the first time I've tried using flexible components in a mechanism assembly. When I click "Drag Components", or go into Mechanisms application, the flexible components become inactive in the model tree and disappear.

I assume this is normal behavior and no way around, but wanted to confirm with folks before I go back to saving a bunch of separate parts with different states of compression.

Creo 2

Thank you!