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The map layer files need to be already present in the default config (current config revision set) and is case sensitive.
The map layer files should not be referenced with an absolute path in LocationSets.xml. This means it should be refered to via just its file name without anything in front of it: <file>locationSet.csv</file>, or <csvFile>locationAttributes</csvFile> or <dbfFile>moreLocationAttributes</dbfFile>
It will check whether all imported files are present in the current revision.
It will validate whether check if it finds warnings and errors in the new configuration is still validand if so rejected the new files and let the module run fail.
If no warnings or errors are found the new configuration is valid the new files will be imported and a new config revision set will be created. The files will be moved to the backupDir.
When the new configuration is NOT valid did not pass this validation NO files will be imported and NO new config revision set will be created. The files will be moved to the failedDir.
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