When you create a study, the software associates it with the active configuration. The configuration name appears next to the study name in the Simulation study tree. At any time, you can only access the studies that are associated with the active configuration. Other studies are grayed out when you click their Simulation study tabs.
To associate a study with a configuration:
The new study is associated with the active configuration. The name of the configuration associated with the study appears (in parentheses) next to the study name in the Simulation study tree.
You cannot change the configuration of a study. However, you can copy (duplicate) an existing study to a new one with a different configuration.