When setting up import and matching imports with dataset, it can be a cumbersome process. One idea to make this much easier to test for errors would be if we could Undo/Revert and Redo imports. This is especially useful when you have a bunch of rules that you wanna test and see if it works properly. If you can undo or even better Rerun, you could easily manipulate rules, run again to see if it works and move on.
This would be a great improvement.