Archetypes' thumbnails

I’m trying to move archetypes to an another package, but they lose their custom thumbnails in the process. Is it possible to keep them somehow? There are too many archetypes to restore their thumbnails manually.

Figured this out.

  1. Make a copy of your package with archetypes and give it an appropriate name.
  2. In content browser remove everything from the new package.
  3. Move your content to the new package.

Archetypes will keep their thumbnails and safely create redirectors.