If you edit a patch in the GR-55, you must save (write) that patch to a user location if you want to keep the settings. If the patch does not get written into a user memory, all of the edits/changes that you've done for that patch will not be saved. Here's how to Write a patch in the GR-55.
1. Edit any patch to your liking.
2. Press the WRITE button.
3. Turn the dial to choose a User location to write to.
4. Press WRITE again. ("Now Writing" appears briefly in the display and then you're returned to the main menu).