The file type when read into LabVIEW by a VI such as "FP Get Configuration Info.vi" reads in the configuration data and places the information in arrays of strings. Looking into the VI, the actual code used to interpret the .IAK file is called with a "Call Library Function", which we do not allow as open source.
However, the function "FP Get Configuration Info.vi" may be a viable alternative to using Measurement & Automation Explorer to read your .IAK file.
Cheers!