Easily copying logic from query or filter to a split?

We will create some complex logic in a query or filter with multiple lines and rules. Sometimes we will want to replicate some or all of these rules in a split. At the moment I will do this all manually, a line at a time, which can be extremely hard and time consuming.

Is there an easy way I can copy all of the logic used and paste into a split? I saw there is an option for "Generated SQL Query" that can be copied out, but I can't see how to copy this into anything.

Any help would be greatly appreciated!