I export and re-import the same study CSML

If you export and then re-import a study using the CSML format, the Study Design object is overwritten. (Each study has only one Study Design object.) The following rules apply when an imported study object and an existing study object have the same object ID.

Import target	Imported study object has the same ID as a study object in...	Result
Study	Any other study.	The ID of the imported study object is changed to a new ID. All references to the imported study object in the import are updated to refer to the new ID.
Study	The same study.	The ID of the imported object does not change.
Library	Any library.	The ID of the imported object does not change.
Library	Any study.	The ID of the imported study object is changed to a new ID. All references to the imported study object in the import are updated to refer to the new ID.