Thinking about this it occurs to me that my original workflow
could be modified by eliminating this step and simply saving the pp3 file (under a unique name to indicate it is the pre-print version) before going on to preparing the print ready image. I am not sure just how to accomplish this.
Once the additional editing for print is done (soft proof, cropping, ppi adjusted, etc.) the final print ready file is saved/exported as a jpeg with the name changed to include print dimensions (in my case leaving the output profile unchanged from that used for soft proofing; in other cases resetting the output profile to that requested by your printer).
The best solution probably lies in your subsequent posts but I don’t fully understand the use of the Snapshot. I know at some point there was consideration to incorporate snapshots in the pp3 data, but assume this idea has not yet been implemented.
What does CTRL+SHIFT+s accomplish?