Dynamic alert thresholds in 10.7

I have some questions about how the new dynamic alert threshold function works for nodes and interfaces.

It looks like:

1. Dynamic thresholds for nodes are calculated at the time the button is clicked on the Edit Node page and are based on the data collected for the number of days set for the Baseline Data Collection Duration. These thresholds are not calculated again unless the button is clicked again manually.

2. For interfaces, does Orion update the dynamic thresholds based on the Interface Baseline Calculation Frequency AND use the setting for the Baseline Data Collection Duration to determine how much data to use to perform the calculation?

Another way to ask the question... are Node dynamic thresholds updated manually, while interface thresholds updated automatically with a "rolling" calculation?

Thanks.