If there is any metadata attached to an Item in Content Workflow, it can be imported to AEM as well.
Add metadata fields
You should add metadata fields to your Content Workflow Templates just like any other fields that you want to be mapped and copied during the import process.
Map fields
Metadata fields should be mapped for every language independently of any other content.
Import content
Once mappings are specified the content can be imported via the Import function.
Imported metadata can be found in corresponding page properties.