Notepad++ How to insert a new line when multi-editing?

can I insert a new line when multi-editing in Notepad++? I sometimes have to convert a list of codes like this:

code01,code02,code03

to a list like this:

code01
code02
code03

Multi-editing works well to backspace out the commas but when I try to enter a return to start the next line, multi-editing turns off.

I've looked around for documentation but can't find anything. I know I can use the find/replace dialogue to replace the commas with \n or \r but there are other more complicated situations where a multi-line new line creation would help me.
Thanks in advance,
Graham

Answer

Instead of using the Enter key, type the "carriage return" character (ASCII 13).

You can do this by holding Alt and typing 013 on the numeric keypad (while NumLock is on), and when you release the Alt key, it'll insert a carriage return.

Just tested in NP++ v6.6.3 and it worked. :)