@DmitryBarashev I am having problem with the attached file, not sure I am doing wrong, but not being able to import the content, could you advise please?
109_22550_nonselection.csv (274.8 KB)
It is not in the format which can be understood by GanttProject. Column names, data value formats, everything is different. You can export a sample project from GanttProject to CSV to see what is expected in the column names and cell values.