1999 Honda Odyssey Transmission

I have a 99 Honda Odyssey that acts like it's dropping into Neutral while I'm driving. Every gear acts like Neutral. When I stop and turn it off and back on it goes into gear and drives fine for a little bit, then acts like its back in Neutral (The gear shift level is still in drive.I even try shifting into other gears)

The ignition switch went out and I had it replaced because it was on the recall list.

I also had AAmco rebuild the Transmission ($3200.00) and it seemed to work for about a year. As soon as the AAmco warranty ran out it is doing it again. I have only driven it 10,000 miles since AAmco rebuilt the Transmission.

I think it's a little strange that the rebuilt Transmission is acting the same was as the old transmission. Any Ideas?

Dave