Substitute a comma with a line break in a cell

For some reason, none of the above worked for me. This DID however:

1. Selected the range of cells I needed to replace.
2. Go to Home > Find & Select > Replace or Ctrl + H
3. Find what: ,
4. Replace with: CTRL + SHIFT + J
5. Click Replace All

Somehow CTRL + SHIFT + J is registered as a linebreak.