MS Project Summary Tasl (ID 0)

RE: Gantt : Samples

DHTMLX Gantt sample “Import MS Project file” using DemoProject.mpp does NOT import project summary task (Task ID 0). Is this a bug or is there a work around?

Hello,
Right now, there is no way to import the root task from MSP files. The dev team will try to add that feature in the future, but I cannot give you any ETA.
There is no known workaround to make it work