Another very flexible way to do what you want is to enter SE instead of S along side the spool dataset you want. From that point onward you can treat the spool data as you would an ISPF edit dataset. You can:
Selectively cut and paste data from the spool to another PDS member or PS file.
Use the ISPF CREATE command.
Modify the data before you save it to the other file.
Delete lines from the spool dataset and save the result to a file. The data is restored upon exit.
Most things you can do in ISPF Edit you can do in SDSF SE.