Attaching columns to results

I have data, like this:


After filtering and processing I am getting:


As you can see, I lost information about id and salaryNormalized. 

Unfortunately, this values are very important for me in further processing ... so how to attach id an salaryNormalized columns in order to they were associated with resulted document (after processing) ?


Attached is my project.

And screen of my workflow:


At any point in the workflow, you can use the Joiner node and append the original data (based on the RowID) to your original dataset.