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Comment: Migration of unmigrated content due to installation of a new plugin
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4.12. To see what obstacles may arise in the course of loading mapping data, let's try another file. This one, named 'duplicate_mapping_file_tutorial.CSV', will replace the one we loaded in steps 4.5 to 4.6. A partial screenshot of this file, taken from a Microsoft Excel 2007 window, is shown below.

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We've learned a valuable lesson from this exercise: be sure to check your mapping file for any duplicates before loading it into your study, as caIntegrator does not perform this check for you!

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