Ben

Problem:
You are trying to edit a CN translation of a post on your bilingual website but receive an error message stating, "You attempted to edit an item that doesn't exist. Perhaps it was deleted?" even though the post is live.
Solution:
We have identified that this issue is not directly related to WPML but is a known WordPress issue. You can find more details and a suggested workaround on our errata page. Please visit the following link to resolve the issue: WordPress 6.7 - You attempted to edit an item that doesn't exist with translated post type slugs.

If this solution does not apply to your case, or if it seems outdated, we highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. Should you need further assistance, please do not hesitate to open a new support ticket at WPML support forum.