Installation Witz backup

Hi all,
I want to migrante Home Assistant from a PI3B+ to PI4.
I imaged the PI4 Home Assistant on a SD Card and configured Home Assistant. Then I restored the system with a PI3B+ full backup. The Addons are available, but no automations, integrations, HACS, configuration.yaml, template.yaml, etc are available. Why is that in a Full Backup missing? How can I add the missing things. Who can help me?

Many thanks in advance.