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By default all data feeds are visible in the Import Status tab. If If some data feeds are not wanted, for example because they they are not really relevant, one one can use an option disableDataFeedInfo in the TimeSeriesImport config file. Since 2019.02 obsolete data feeds can be deleted from the admin interface. See Admin Interface Files - Import Status.
Last import time is updated only if at least one file has been successfully imported. The cell in the column ‘Files Failed’ is colored red when there is one or more files failed.
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