Under the hood, a "List" is private subsegment linked to another entity. These will follow the same import validation rules as segments.
A list can also contain subsegments!
id a new UUID will be generated.
Associated list objects exported with the segment will be recreated.
context must be a valid "app-context" in the environment
Subsegment references to unknown public segment ids in a different environment will not be recreated. These will need to be imported and exported separately and readded.