There are 2 projects created:
1. One project for EPIC creation
2. Another project for Other Issue Types (User stories, Tasks and Sub-tasks) creation
This is done so that EPICs and other issue types can be identified with a different key names (For e.g. EPIC will be identified as FR-1, FR-2; Other Issue Types will be identified as ENG-1, ENG-2,..)
We make sure that EPICs are linked appropriately with the User Stories. We will use boards that connects both the projects to generate graphs. Note that both are scrum boards.
The Question:
Is there any limitation of using the full potential of JIRA if we use 2 projects instead of a single project?