Hi @Curt_H , @WQIDES , @CindyS , @Anneka_France , sorry for the delayed response. Understood about the importance for copying layers, and likewise for the hassle (and incompatibility in some cases) for having to switch viewers as part of a hybrid workflow.
Copying layers, and saving to the layer item, is one of the core features that hasn't brought into the new viewer yet (as you've seen and voiced). It's being actively worked on..the goal is for it to be included in the update planned towards the end of the year. If it doesn't make this upcoming update, it would be for sure included in the Q1 release.
@WQIDES would you mind to post additional details about the legend label reset (or send directly if you prefer)? That sounds like it might be a bug to investigate.
Cheers,
Chris