I have been a Delta Platinum for many years now. While flying international a few years back, I could book in main cabin and then change seat after ticketing to Comfort+. Then a couple of years back they stopped allowing Medallion members ability to change seat from main cabin to comfort+. I booked my ticket 3 days back in Main Cabin (V class) but I am not able to pick any seats in comfort+. As late as this year, there was a check box at the bottom of the booking page to request upgrade to comfort+. I do not see that either. Has there been a change to Delta policy to no more allow upgrade from Main cabin to comfort+ on Delta international flights? This is for a flight on 30th January.
thanks for responding.