Different versions and catalogue compatibility
I notice the new versions of Lightroom only work on MacOS 10.14 and later. I have an issue were my old macbook pro doesnt support 10.14 although my iMac and Mac Air do. My question is if I upgrade the iMac and Mac Air to the latest version of Lightroom can I still synchronise the catalogue between each machine or is there incompatibilities between the catalogue in each version ? If I cant just move the catalogue between each machine what is the easiest way to move the catalogue from the MacBook Pro (older version) to the machines running the later version ? (I do most of my work on the Macbook Pro.)