Import QIF data to existing account?

[Russ Poyner]

Is it possible when importing quicken qif data files to have the imported 
data added to and merged with data in an existing gnucash account rather than 
having the data go to a new account?  

My bank provides monthly statements in qif format and it would be useful to 
be able to download these and import and merge the data into the appropriate 
account.  This would save a fair bit of hand transaction entering.

thanks in advance.

Russell Poyner