I am helping a friend configure their new HE to migrate from Vera to HE. In the migration process, we discovered that with no motion sensors installed, if we install just a virtual multi sensor, that in Rule-4.0, the Motion capability is not available in the list to pick from. If we change the Virtual Multi Sensor to a Virtual Motion Sensor, then it does show up.
This is not a huge issue, though I suspect other migrating may run into the same issue. Since we don't have access to the source, I can only speculate as to what might be going on.