Getting correct Date/Time data in DIAdem 11 from LabView tdms data

Question

I've got a handful of large tdms  files (9-18 million data points) collected with LabView that I need to extract elements of, and export as a text file, with the time data as a string.
I'm using DataFileLoadSelect and the Register option and then DataBlCopy to bring in a chunk of data at a time, but I'm having to explicitly convert each time value from a LabView timebase (1/1/1904) to the DIAdem timebase (1/1/0000), not to mention the offset,  before writing the date-time as a text string - this really slows the process down. 
I't strikes me that DIAdem(11.1) has got to have a way to read LabView timestamps correctly, but I'm a DIAdem novice, so any suggestions would be helpful. And no, I don't have LabView installed locally, so using a LabView vi is not an option for me.
Thanks,
Eric
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Answer 1

WfmToDateWfm works great, but there is a bug in the code if you want to use DataFileLoadRed and your starting point is not at the beginning of the file.  There is a provision in WfmToDateWfm to handle the offset, but it's not hooked up:
OffStartTime = ChnPropValGet(Channel, "wf_start_offset") ChnDeltaTime = ChnPropValGet(Channel, "wf_increment")
RelStartTime = 24*3600*(Trunc(ChnStartTime) + 693958 + Abs(Frac(ChnStartTime)))
To make WfmToDateWfm work with an offset, simly add the variable OffStartTime to the RHS of RelStartTime
Eric