changing a large number of transactions in a batch -- impossible?

[Anna's unattended mail]

There does not seem to be a way to select many transactions, and do
something like delete them, change the description, or move them to
another account.  Is gnucash really limited to working on one
transaction at a time?  So if a user wants to move 100 transactions
from account A to account B, the gnucash way is to tediously do ~3-4
clicks on each row (since there are no keyboard shortcuts either).  Is
that correct?

What are the options here?  What about exporting an account to another
software tool (Ledger-cli?), performing the batch operation there, and
then importing the new accounts?  Has anyone tried this?