I can't seem to get 'Preserve' to work. But maybe I am understanding it wrong.
I did a test for my Bath team, and made a rtf file with all my youth players in it, who are all newgens.
I ran the program with the setting 'Generate'.
All is well, and my youth team now have the generated portraits.
I then made a rtf with just three of my seniors who were missing faces.
I ran the program with setting 'Preserve'.
When I reload the skin, all my youth players have regen-faces again.
I was of the understanding that Preserve would keep those, and then just generate new portraits for the three players I ran the second time. Am I missing something (obvious)?