Import tasks to multiple project

Import tasks to multiple project

Hi, 
We have about 500 projects to import to zoho project.
We find a way to automatically create all 500 projects easily in Zoho Project but we cannot use project templates because we have differents tasks to import to differents projects.

Is there a workaround to imports all the taks to multiple projects at the same time?
We cannot do this job one by one, it's hardly time consuming.

Thanks