Issue Summary

This is reproducible on Data Center: yes

Steps to Reproduce

1. Create a schema A with duplicate object has same value for attribute A
2. Create an empty schema B and setup Assets import the previous schema
3. Follow the instruction to create predefined structure and configuration 
4. Set the attribute A in schema B to be unique
5. Start Assets import in schema B

Expected Results

The import should be failed 

Actual Results

The import is succeeded with missing object  

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available