Bizzare problem while handling open documents.

Hi.

I am facing a bizarre problem when I retrieve the open documents with the following code:

for (F_ObjHandleT docId = F_ApiGetId(FV_SessionId, FV_SessionId, FP_FirstOpenDoc); docId; docId = F_ApiGetId(FV_SessionId, docId, FP_NextOpenDocInSession))
{
    StringT documentFilePath = F_ApiGetString(FV_SessionId, docId, FP_Name);
    ....
}

If I paste from e.g. Microsoft Word any formatted text and paste it to a new document in FrameMaker when I try to get all open documents I get not only my new document but also a temporary document with filepath: C:\Users\Me\AppData\Local\Temp\FRS375F.fm.

This file contains the same information that I have pasted in my new document and also does not exit physically.

Can somebody please tell me why is this happening?