Can you edit photos saved in earlier Lightroom formats with the controls of the current Lightroom?

[Craig Tidball]

When I pull up a photo edited in an earlier version of Lightroom it only shows the old controls in the develop module.  I see things like Fill Light and don't see Dehaze and other current version tools.  How can I edit old Lightroom files in the latest version?  I'm on a Mac using Lightroom Classic 10.1.1.  

[Jim Wilde · Accepted solution]

You can do that by updating the Process Version (PV) to the latest version. In the Develop module, if you look below the Histogram you will see a lightning bolt icon. Clicking on that gives you the option to update the PV, after which you will have all the latest controls.