Change Idea Status to "Planned" When Promoting to an Existing Feature Merged

When I promote an idea to a new feature, its status is automatically updated to planned. However, when I promote it to an existing feature (that has not yet been implemented), it's status remains as "Under Consideration" or whatever. I'd like it to also change status to "Planned". Would be even cooler if it could change status to "Already Exists" if the Feature has been shipped. But that second part is not required, just a bonus.