Trading Account Problems

[Per Kjeldaas]

I elected to use trading accounts, and now I am looking for a way to 
reverse my election, but cannot find it.  It turns out that with this 
election, if you split an old transaction, it will immediately become 
unbalanced, and the system asks you to make it balanced or it will do it 
for you by the use of trading accounts.  Of course, it was already 
balanced before I opened it.  Now the trading accounts will be involved 
in every stock purchase and sale, with stock-type sub-accounts created 
for every transaction.

How can I reverse my unfortunate selectipn?