How to modify many transactions at once

[Malcolm Fitzgerald]

I'm just starting out with gnucash and I've imported a large number of bank transaction records. I now have hundreds of imbalance notices that I'd like to correct.  Whoops. 

Many of my transactions are scheduled payments, so I can easily discover them with a find. Is there a way in which I can transform a batch of transactions? I'd like to locate the transactions then move all of them to an account. Is this possible? Can it be scripted? 

thanks,

Malcolm