Merged actors cannnot cast shadows when source actors Cast Shadows is disabled

Merging actors with cast shadows disabled causes the merged actor to be unable to cast shadows at all. Toggling the Cast Shadows option does not resolve the issue.

This is seen in //UE4/Release-4.24 cl 11590231 so I am not listing this as a regression.

1. Open a blank project
2. From the modes panel, drag one or two meshes in the scene
3. Select all meshes dragged into the scene
4. In the details panel, disable cast shadows
5. With both actors still selected, Right click one of the actors
6. Select Merge Actors
7. Merge with default settings
8. Drag the new merged actor into the level and look at the details panel

Result
Cast shadows is enabled for the merged actor but it is not casting shadows

Expected
Merging actors does not care about actor settings when merging