I am having a hard time understanding what you are trying to say.
The AODE will shift into 3rd gear, then it will usually engage the Torque converter clutch, then it will shift into 4th or OD, then engage the TCC again. When the TCC is engaged you have a solid connection between the converter to the output shaft, basically its just like a clutch on a stick shift car(there is no converter slip with the TCC engaged). Now when the TCC is engaged and you try to lightly accelerate(say 1/4 throttle or less) the rpms will not move much, because the converter is not stalling anymore, it is locked. If you give it to much gas the TCC will disengage first, which will cause the rpms to go anywhere from 200-500 higher than they were with the TCC engaged, then it will possibly downshift to 3rd or 2nd gear depending on the amount of throttle you give it, and what speed the car is at. Most the time when you are say going up a steep hill, it will just dissengage the TCC, but the tranny will stay in 4th gear. To be quite honest the AODE/4R70W have problems with both Torque Converter shudder and OD bands burning. The Torque converter clutch shudder is really common, but mostly happens with AODE/4R70W's with quite a few miles on them and non serviced transmissions. What kind of converter are you running, was it replaced new when you had it overhauled?
I work on these for a living by the way, so feel free to ask any questions.
I have explained the basic operation to you, hopefully this will help you, if not try to explain the problem again, because I am not really understanding what exactly the problem is.