SharePoint hosted App data migration

Hi,

I know that this is not a place to ask the question for data migration. But here is my scenario,

1. I have an Travel application is in Lotus notes and need to move to SharePoint online.

2. Using lotus notes migration tool (any tool), simply I can move the data from Lotus  notes to SharePoint online lists.

3. But I plan to build the SharePoint hosted App. So the SharePoint hosted app will have have all the related Lotus notes lists. 

4. How can we migrate the lotus notes list data to SharePoint hosted app's lists (not root site).

Regards,

Siva