When I work on a file in Photoshop, I often make “merge visible” layers to document different states. I call these “MVs” (my own shorthand for “merged visible layers”) and usually add a number to help me keep track of them, i.e., MVs1, MVs2, etc.
I’m working to optimize the one “keeper” print I want to make from such a “multi-MVs” PSD, which has four of them, each of which is subtly different from the others, and all of which I want to print so I can lay them out in a viewing area to compare them to the prints I’ve made of other images (I’m working on a sequence of prints).
The printing will be done from Lightroom using a preset.
I have observed that the preview in Lightroom (and what shows in the print module) does not change from what it was when I opened the file in Photoshop unless, in the PSD, I save a certain state, in which case the Lightroom preview changes to reflect that state, and then that current state also appears in the print module.
So, can I print from Lightroom the various MVs (i.e., the different states) by leaving the PSD open in Photoshop and merely saving (but not closing) the file with only one of the four MVs turned on and then printing from Lightroom, or is there some reason to close the PSD in a given state, print that state, and then reopen in Photoshop, save it again in another state, etc.