diff --git a/docs/system/configs.md b/docs/system/configs.md
index 01103af..c91b3b4 100644
--- a/docs/system/configs.md
+++ b/docs/system/configs.md
@@ -74,6 +74,8 @@ Imports are designed to be safe, but you should know the rules:
 * Removing a Channel, Playlist or Repo from a non-empty `channels.yaml` / `playlists.yaml` / `repos.yaml` **will
   delete it** (and a Channel's videos; a Repo's files are kept) on the next import — this is how you can remove
   Collections by editing configs.
+* Removing a Domain from `domains.yaml` only deletes it if it has no Archives. A Domain with Archives is kept (and written
+  back to `domains.yaml` the next time Domains are saved), because deleting it would also delete its Archives.
 * Removing a Tag from `tags.yaml` only deletes it if it is no longer used by anything.
 
 ## Backup and Restore