To import Leica xml files into Trimble Business Center (TBC) there is a plugin installation available which is licenced to the ANZ Toolbox module in TBC. This allows Leica HeXML data (Versions 1.7 to 1.8) to be imported into TBC from the XML file as points using the stored coordinates, with the option to bring in station and observation raw data.
Please find the instructions of how it works and the download available HERE.