What happened to "metadata has changed"?
I am (finally) converting from CS6 and Lightroom V6 and have found an issue with 9.2.1. In V6 if I edited a file in Photoshop, while using it in LR I would get a "metadata has changed" message and I would choose the LR metadata. This no longer happens in LR Classic 9.2.1. I do see posts about this message as late as June 2019, so Classic didn't initially lose this feature. I have a workaround, but maybe there is a setting to bring it back?
I use it frequently in this scenario. I do a lot of editing in Photoshop. I usually leave the image open in PS even though I continue to edit it in Lightroom. If I see something that I want to do in Photoshop, I pop back to Photoshop do what I want, save. Then I get the metadata has changed message and I choose the LR metadata and all is well. This is not happening with LR Classic 9.2.1. My LR metadata just disappears. Edits are saved, although in history it pops back to the begnning, the history is there, so I can recover my LR edits. But not my LR metadata. It has been erased.
I have found a workaround. I can save the metadata and then copy it back, but why in their wisdom did they decide to take the edited metadata rather than the LR metadata?