My workflow so far has been:
1. Create a new goal.
2. Create a new feature.
3. Create a new release.
4. Assign the goal to the feature.
5. Assign the feature to the release.
6. Assign the goal to the release.
Duplicate manual entry happens because step 4 and step 6 are me double-entering the same data.
What I would like to have happen instead is that step 6 is done automatically, based on the features added to the release. This could be done behind the scenes after step 5 has taken place.