Enum Element Names Reset on Project Upgrade

Upgrading a copy of a project from 4.14 to 4.15 appears to be resetting the names of enum elements on switch on enum nodes.

Opening the enum, saving it, and then restarting the project seems to resolve this issue as a workaround in the meantime.

This seems to be a regression, as it did not occur when converting 4.13.2 projects to 4.14.3 based on my tests.

1. Open a new 4.14.3 project
2. Add a new enum (TestEnum)
3. Add 4 elements to the enum (name them One, Two, Three, Four)
4. Save the enum
5. Create a new actor blueprint
6. Add a variable of type TestEnum
7. In the Event Graph, get the variable and connect it to a switch on enum node
8. Connect the switch node to Begin Play
9. Compile & Save
10. Open a copy of the project in 4.15 through the Project Browser
11. Open the actor blueprint

Result: Notice that on the Switch on Enum node, all of the enum element names have been reset.

Expected: The names would remain the same