@ciganomarola - Yes, i had a female auto NorthernLights/Malawi and crossed it with pollen from an photoperiod Oaxaca male. The Oaxaca seeds came from Upstate’s Cryptic Lab repro. I had two males, but one of them was intersex, so i threw that one away. I also am using the Oaxaca pollen on several other plants in my garden.
As far as i know, growing out the F2s should result in 25% of the progeny being auto. Crossing those auto F2s should lock the auto genes into the F3 generation. As far as i know, it shouldn’t matter if the auto gene comes from the mother or the father. Have you read something different?