RVTDocs.com

TransmissionData.IsTransmitted

Property
Description:
Determines whether this file has been transmitted or not.
Remarks:
"Transmitted" files have been moved from one place to another and are considered to be in a not-final state. Revit will read the TransmissionData on file open and overwrite any data stored in the external file reference elements themselves.
Syntax
public bool IsTransmitted { get; set; }