Are blocklists supposed to automatically survive the upgrade from 14.latest to 15? All my existing blocks are empty in the UI, but adding new blocks works. The blocks are there, but clicking the invisible "edit" link in the left end just shows "editing undefined". I've tried turning on/off the inline editor, no change. I've tried clearing the custom block labels, no change.

Yeah , I can replicate this one too, Umbraco v14 with the starter kit, upgrade to v15 and the blocks go blank.. 😦

I heard Kenn speaking at UK Fest and he mentioned something about the Blocks being migrated to support variants, wonder if something has gone wrong here? https://github.com/umbraco/Umbraco-CMS/blob/contrib/src/Umbraco.Infrastructure/Migrations/Upgrade/V_15_0_0/ConvertBlockEditorPropertiesBase.cs

Hi, I think i had something cached, because clearning my nuget cache

dotnet nuget locals all -c

and repeating this and it worked 🤔 - I tend to have some links to preview feeds so i might have had something odd there.

Thanks, will try with a non-RC 15 and cleared nuget caches. Not 100% sure how to get my blox back though. I can't easily downgrade to 14 since the database has been upgraded. I could setup a blank 14 and uSync in all the content maybe.

if you have the usync files from the v14 site, importing them into v15 should see your blocks return (uSync will do the migration of the blocks on import too)