I installed my comp Studio 2 (thanks!) and did a quick run-through focusing on non-destructive editing and use with Lightroom CC Classic (Lr) and Photoshop CC (Ps). From Lr, if I “edit-in” Studio 2, make edits in Studio 2, then return to Lr, the resulting edits are “baked in” and cannot be returned to Studio 2 for re-editing. That was expected as most other photo-editing plug-ins function that way. However, prior to returning to Lr, I noticed there was no way to save the Studio 2 edits as a native Project File to preserve the edits. In Studio 1, I was able to save as a Project File prior to returning to Lr. If later I wanted to re-edit the photo, I would open the Project File directly in Studio 1, make edits, save the edited Project File, export the Project File as a tiff, then import the new file into Lr. Cumbersome but at least I could work non-destructively. I also tried another method that works with some other software. I sent the Lr photo to Ps as a Smart Object. From Ps I selected Studio 2 as a Filter. In Studio 2 I made edits and returned to Ps. While Studio 2 edits appeared under the original Smart Object, when I returned to Studio 2 by double clicking the Studio 2 object, the edits were not preserved. In fact, only the original Smart Object is sent to Studio 2 without any previous edits. Again, this was expected as Studio 1 also did not support Smart Object re-edits. And just like going to Studio 2 direct from Lr, there was no way to save a Project File after going to Studio 2 from Ps as a Smart Object and therefore no way to preserve the edits for later re-editing. The only way I found to work non-destructively was to open a file directly in Studio 2, make edits, save as a Project File (I noticed a new file type name different than a Studio 1 Project File (.tsp)), export the file as a tiff, and then import into Lr. Too cumbersome to be worthwhile.
Hopefully Topaz will add the ability to save files passed from Lr and/or Ps to Studio 2 as a native Project File and also add Ps Smart Object support for non-destructive editing.