The "Translate automatically" feature in the Advanced Translation Editor (ATE) is failing to populate the URL slug field, even though the field is visible and other content on the page translates correctly.
Steps already taken:
Settings Change: I enabled "Translate (custom values of slugs)" in WPML > Settings after the initial translations were already completed.
Field Visibility: I used the "Quick Edit" / "Update" method on the original language pages to force the URL field to appear in the ATE.
ATE Behavior: When opening the ATE, the URL field is now visible (showing a + icon or empty box), but clicking "Translate automatically" ignores this specific field while successfully translating all other strings.
Last Resort Attempt: I have tried deleting the translation entirely (trash and permanent delete) and re-translating from scratch, but the ATE still loads the "100% complete" status from memory and leaves the URL field empty.
Troubleshooting: I have already cleared the WPML cache and synchronized local job identifiers via the Troubleshooting page.
Current Problem: Even though the URL field is now "detected," the Automatic Translation engine refuses to fill it. I have to manually type every slug, which is not feasible for a large number of products and pages.
When you have the option "Translate (this will include the slug in the translation and not create it automatically from the title)" selected, WPML will not translate it automatically. Let me clarify how WPML works in that respect:
By default, the page/post slug are generated by the title. That means that they're indirectly translated. What happens is:
1. The post Title gets translated into the secondary language;
2. The post slug for the translation is created from the translated Title;
That doesn't happen though, when you have the above mentioned option selected. That option is meant to be used when you want to overwrite the default translation, and insert it manually.
It seems to me, that the best option to achieve what you want, is the deafult one "Auto-generate from title (default)"