I migrated from Magento 1.9.1 to Magento 2.3.4 using Data Migration Tool.
I follow the Settings – Data – Delta steps but at least i obtain duplicated websites/views of my site.
When I try to access to one category on my site I obtain the following error message: “There has been an error processing your request – The store that was requested wasn’t found. Verify the store and try again”.