Classes with concrete attribute not saving custom device editables

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Devices

Summary

Classes with concrete attribute are not properly saving custom device editables. They appear to be saved but when reloading UEFN they are not saved.

Steps to Reproduce

Create a custom device.
Create a class with the concrete attribute and an editable referencing the custom device.
Put the class into a different custom device.
Save the first custom device into the class.
Attempt to do something with the editable.

Expected Result

Editable saves.

Observed Result

Editable does not save.

Platform(s)

PC