Pages designed in the page builder keep save history: each save stores a snapshot of the layout that can be restored later.

Restoring

  1. Open the page in the page builder
  2. Open the revisions panel / menu entry
  3. Pick a previous save to preview its layout
  4. Restore to make it current

Like post revisions, restoring keeps the replaced version in history so nothing is lost. Use it to experiment freely with redesigns.