1. Can you define what 'active' means? All calculations are 'active' in that a user can go back at any time to a past calculation to add/edit labels. Please refer to 'Add a label' use case: http://design.canonical.com/2013/03/app-patterns-applied-calculator-key-journeys/
2. It is true that removing an operation will become tricky as it changes the calculation, so we won't be working on this then. I have updated the bug description accordingly. thanks!
1. Can you define what 'active' means? All calculations are 'active' in that a user can go back at any time to a past calculation to add/edit labels. Please refer to 'Add a label' use case: http:// design. canonical. com/2013/ 03/app- patterns- applied- calculator- key-journeys/
2. It is true that removing an operation will become tricky as it changes the calculation, so we won't be working on this then. I have updated the bug description accordingly. thanks!