Changing the account associated with an OFX/QFX import

[Deepee Khosla]

I imported transaction data from a bank in OFX file format.  When I
first did this, I was asked to choose an associated account.
Unfortunately, I chose the wrong account, and now I don't know how to
undo this.  Now every time I try to import an OFX file from that
institution, GnuCash associates all transactions to the wrong account.

Is there any way to undo this association?

Thanks, Deepee