I just downloaded the Aware IM version 5.2 for Windows (build 1513) and tried the XML export.
I selected the "Business Space Version(*.xml)" option for the File Type but it created a .BSV file not a .XML file.
The file name and contents are identical to selecting the .BSV option.
If I include the .XML in the name (e.g. FileName.XML) nothing is produced.