Integration with R4J is not fully working with Manual Test Steps

Situation:
Within R4J we provide an solution to "reuse" Jira issues, an improved way to clone issues. The user has the option to select the fields important for the clone, everything else is skipped.
Till XRAY 3.x it was possible to copy all test steps with the "Manual Test Steps" field.
With XRAY 4.x this field seems not more available/include content.