Never mind. My mistake.
In order to save money I’ve been print editing on epson paper and final printing on hahelmuke paper. The epson gloss paper shows no difference between the two printer rederings (perceptual and r.c.) while the hahelmuke does. I soft proofed with hah and then printed with epson (the only available paper). Bad idea. Sorry for troubling you.
There was a valuable lesson here for me. I have to stay consistently with the same paper throughout. Up until now I haven’t noticed a difference because one used gloss paper and the other baryta and the results seemed the same.
Sorry for the confusion.