Johan Reitsma

📰 Missing umbracoExternalLogin Data After Migration in Umbraco 13

During a migration from Nested Content to Block List in Umbraco 13, Johan Reitsma encountered an issue where the `umbracoExternalLogin` table was empty due to unconfigured external login providers in `appsettings.json`. This led Umbraco to automatically remove external login records. To prevent this, it's advised to configure dummy values for external login credentials during local migrations.