Duplicates generated in dataRequirement element of Library resource

[rob-reynolds]

Describe the bug See us-core-race duplicated on the right.

Also see attached examples

To Reproduce Steps to reproduce the behavior:

1. run _refresh against the ecqm-content-r4 ig
2. look in the ecqm-content-r4\input\resources\library\EXM506.json file
3. look in the dataRequirements element
4. you will see duplicates

Expected behavior No duplicates

Desktop (please complete the following information):

• OS: all
• Java Version: all