Moving an issue to Epic during a Sprint carries the Sprint information

Scenario:

1. Create an issue A of type Story
2. Add issue A to thye Sprint X
3. Convert issue A to become an Epic
   • Issue A is still showing in the Work mode of Sprint X (to be reconsidered?)
4. Create Sprint Y
5. Complete Sprint X without moving issue A to the Done (last) column in Work mode
   • Issue A has now Sprint Y as a future Sprint when opening the issue
   • Issue A is not displayed on the Plan mode under Sprint Y, therefore we can no longer remove it
   • When starting the sprint Y, issue A will be effectively an Epic which has a Sprint = Sprint Y, whereas we did not account for that