We stopped creating the "NSRR XML" files a few years ago. These type of annotation files were specifically created for some EDF-related tools that are now defunct, e.g., https://github.com/nsrr/edf-editor-translator
The Profusion and NSRR XML files contain the same information; the NSRR XML were derived from the Profusion XML. The NSRR XML formats and names things differently, particularly in regards to the sleep staging information.
Moving forward, we intend to use the .annot format as we've done in APPLES. Over time we will add these sort of .annot files to existing datasets like nuMoM2b.
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