Hoping someone can help in this thread just to reconfirm my suspicions.

I recently bought my 2006 Audi A4 2.0T knowing that it had a bit of a tranny issue, but the deal was a good one with the amount of miles the car has.
Audi put in a new TCM last year in December for previous owner, it fixed the problem for 2 months or so and then the problem came back. Getting solid lit PRND in park, gears 1-3, 4/5 are clear.
When you let your foot off the gas quickly, thats when you noticed the lerch or slip or whatever youd like to call it. Being that the part was under service warranty, I brought it to Audi to see about having that part replaced, the refused INSISTING I'd need a totally new tranny. I believe that to be incorrect. I

The codes I'm getting are:

17101 P0717 Transmission Input Speed Sensor NO SIGNAL
17110 P0726 RPM Signal from ECU Implausible Signal - Intermittent

The car runs great other wise, even in "limp mode tranny" she gets up and goes, its decelerating that seems to be the problem.

Firmly believe still that it's the TCM causing this and looking to have it redone as my first option rather then the 4-5k for a new tranny.

Any thoughts on this?