merging gnucash

[matteo brutti]

hi all,
i did a big mistake!
i opened and modified a previous file of my gnucash account book,
replacing the newer one. Now i found this mistake i would to merge the
old modified and the new unmodified. I know i have logs to handmade,
but there are so many modification... is there a way to do it
automatically?
And there is some options to change the directory where gnucash puts
it's log and old gnucash files?

best regards.


Matteo Brutti