Lyc I believe you are referring to the behavior of the Curves view in 4.1. Unfortunately, it is not possible to make the Curves view in 4.1 behave like the Graph view in 3.7 and earlier. This is because in 4.1, changing the key value does not change the curve handle. However, this has been improved in 4.3-beta, and if you set all keys to "separate", Curves will behave exactly like the previous Graph view.
The beta version is not recommended for product development, so it may be some time before you can actually use this improvement in your project. However, we would appreciate it if you could try 4.3-beta and provide us with your feedback.