Hi Georg,
The DrawingPrintManager seems to contain the last settings used in the Print dialog. I checked in Inventor 2014
And the DWG export settings are saved in the ini file. You can retrieve the ini file's path from the SaveCopyAsOptions - oOptions below:
Dim oDWGTranslator As TranslatorAddIn
Set oDWGTranslator = ThisApplication.ApplicationAddIns.ItemById("{C24E3AC2-122E-11D5-8E91-0010B541CD80}")
Dim oContext As TranslationContext
Set oContext = ThisApplication.TransientObjects.CreateTranslationContext
oContext.Type = kFileBrowseIOMechanism
' Create a NameValueMap object
Dim oOptions As NameValueMap
Set oOptions = ThisApplication.TransientObjects.CreateNameValueMap
Dim has As Boolean
has = oDWGTranslator.HasSaveCopyAsOptions(ThisApplication.ActiveDocument, oContext, oOptions)
I hope this helps.
Cheers,

Adam Nagy
Autodesk Platform Services