no prob
I haven't checked the changes between the Keazain's logon updated sql table structure and your previous logon table structure.
If they don't match, then dumping your char data and
inject it to the updated table structures will get an error (mismatch on the table columns)
to backup characters, i think you'll need 2 tables (accounts and characters). this will lead your character with no items,no bank items, no pets or summon, no achievements etc.
take a peek on the logon tables. backup only the things you need..
I did this method but it took more time..
- first of all, i dump the previous tables independently (account_data, account_forced_permission, etc)
- then, i drop all of them and restore from Keazain's updated logon structure
- from there, I compare the table structure of the (updated) individual tables. If they match, restore the data.If they not, then I discard it
If you're patient enough, you'll get everything like it was. This is what the admin on my online private server do. That's their job
but I don't see the point because I only play this game on LAN with my brother

Do you open your server to public? because it's crucial to get ALL characters just the way it is after the update.. Some guy on my online server lost his valuable stuff on the bank after the server update and he's really pissed off .. lol
let me know if you got errors