Linked Imported Files cannot be copied across projects. All non-RVT linked files will be pasted as imports instead.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 26.1.0.0 (26.1.0.34)
Syntax
C#
public static FailureDefinitionId CannotCopyImportInstancesAcrossProjects { get; }