If you import manually a COUNTER report (in CSV) without using Sushi, in the "import logs" tab the "filename" will be the name of the data provider (and not the name of the imported file, as you may have expected) So there is no way to know the nature of the imported data. It could be extracted from the file and added to the displayed name Ex : if you import a PR_P1 report to MYSOURCE datasource and the filename in import logs tab, the displayed filename could be "MYSOURCE_PR_P1"