Task and sub task in portfolio

[Tarjeevn Sahota]

Hi 

   I have been tasked to develop a capacity/ resource plan in portfolio (Jira), i have created multiple projects using task and sub-task for the activities required on the projects. 

When i import these projects into portfolio i can see task but not the associated sub task.  

why is this?

We are new to jira and not every one starts/ progress the task or sub task yet however i would still expect to see these . 

can any one shine a light on this issue