When running a cfgutil command I can verify across multiple OS versions, 10.15.7, and 11 that we get the following.  % cfgutil get all objc[2358]: Class AMSupportURLConnectionDelegate is implemented in both /usr/lib/libauthinstall.dylib (0x7fff8ad23a30) and /System/Library/PrivateFrameworks/MobileDevice.framework/Versions/A/MobileDevice (0x10681a8c0). One of the two will be used. Which one is undefined. objc[2358]: Class AMSupportURLSession is implemented in both /usr/lib/libauthinstall.dylib (0x7fff8ad23a80) and /System/Library/PrivateFrameworks/MobileDevice.framework/Versions/A/MobileDevice (0x10681a910). One of the two will be used. Which one is undefined. cfgutil: error: Error Domain=NSCocoaErrorDomain Code=3840 "Found non-key inside dict at line 112188" UserInfo={NSDebugDescription=Found non-key inside dict at line 112188, kCFPropertyListOldStyleParsingError=Error Domain=NSCocoaErrorDomain Code=3840 "Malformed data byte group at line 1; invalid hex" UserInfo={NSDebugDescription=Malformed data byte group at line 1; invalid hex}}