[Msedanman]

Welcome to the site!!

If I'm understanding your question correctly I believe what is happening is after you downshift in automatic, you are going to have to upshift in auto as well, unless you do not use the paddle shifters for (I believe) 10-15 seconds.

+1.....once you initiate the manual mode by using the paddles (while in auto), it takes a short time to come out of manual mode and back to automatic.
During that period you have to upshift manually also.

C.