Item import map EFF not defaulting to child org

Summary:

We have setup EFF attributes with Master to Child set to Defaulted but none of the attributes have defaulted to child organization, we first imported items and then added EFF values using Item Import map but none of the child org has attributes only master

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):