Note: Drafts and Auto Save is currently part of an Early Access Program and may not be available to all users. Contact the Contentstack support team for more information.
Drafts and Auto Save automatically stores changes as drafts while you edit an entry. If you no longer need those changes, you can discard the draft and revert the entry to its last saved version.
This guide explains:
Warning: Discarding a draft permanently removes all unsaved changes. This action cannot be undone.
To delete a draft entry, log in to your Contentstack account, and perform the following steps:
Note: If the entry has never been saved (version zero), it displays Draft Only.
You can also use Advanced Search to filter entries that contain draft changes.
Contentstack removes all auto-saved changes and restores the entry to its last saved version, if one exists.

Note:
Draft versions are retained only for the five most recent major versions of an entry. When new major versions are created, draft versions associated with older major versions are automatically removed.
You may want to delete a draft when:
Before discarding a draft, review the changes carefully to ensure that no required updates are lost.