Combination two columns

Can I combine two columns to one in a way that I replace all the Rows of the first column with the rows in the second one.
The rows in the first column which are empty in the second should remain the same.
I thought about column splitter → concatenate but that doesn’t work.

Hi @JulianK98
you should use the Column Merger node. Check this example:

It will produce the following merged column


Thank you so much! It works