Problem
You get an exception when trying to copy an MSR workflow template version to create a HEX version that you can use and edit.
Solution
You may get this issue when copying a master workflow template MSR version. For example, if a step in the master workflow(M1) includes a success/failure step that comes from another master workflow(M2).
When you copy the MSR version, a deep copy of the template is performed. Access must be allowed in order to copy this M2 version as the deep copy will create 2 HEX copies, one for M1 and one for M2, and relates the steps between these two HEX copies.