When exporting and importing styles to and from .qml files it is now possible to select a subset of sections. This allows to save and restore parts of a layer configuration while omitting others. For example, it's possible to export only the symbology of a layer and when importing this QML style file o layer, any configuration on the forms and widgets or other properties are unaffected. It is also possible to only handle single sections of a style when using copy/paste.