With FileMagic, loading XCU files is easy. The software parses the markup of the file, showing the contents in a comprehensible format.
For those who are not familiar with XML markup or data structure, the application shows the data in a way that is straightforward. https://www.filemagic.com/en/settings-files/xcu-file-extension/how-to-open-xcu-files-quickly-and-easily/