Hello,

the "override" mechanism works quite different for yaml and JCR.
In JCR the override will completely override all properties and subnodes, whereas in yaml an override only overrides all properties of that node.

Here the Magnolia documentation:

JCR

An override allows the extending node to completely remove the inherited content and replace it with its own content entries.

https://docs.magnolia-cms.com/product-docs/6.2/Administration/Architecture/Configuration-management.html#_overriding

YAML

Use !override to completely ignore the properties of an inherited or included node. As a consequence, you have to add specify properties to the given node.

https://docs.magnolia-cms.com/product-docs/6.2/Developing/YAML.html#_yaml_override

It would be good to have a "!overrideAll" keyword for yaml definitions, so  it would be possible to overwrite a whole node including subnodes (like in JCR).

Best Regards

Fabian