I assembled a Plone site locally, named "dev", and exported it as a zexp archive.
Once re-imported on a new server, it works, but if I rename it (to "stage" for example), all its content disappear; renaming back to "dev" fix the "issue".
How to properly rename a Plone site?
Renaming a Plone was officially never supposed to work or being supported.
At least you need to reindex the complete portal_catalog.
I used "Clear and Rebuild" in /portal_catalog/manage_catalogAdvanced
That would probably fix it.
Yes, as I just confirmed. Thanks!
I think I started answering earlier and posted a few hours later