The official Baan tool to move data about is Exchange, and it's much enhanced for Multisite in Baan V.
You can set up a relationship, including IP Addresses, and Baan will FTP exported data to the Import Directory on the waiting server, ready for "Regular Import". You can set the import up as a job for full automation, or run at your designation. There is some handshaking - ie, you get a confirmation in the sending company if the file has been accepted for import on the receiving end.
Any number of sql scripts will accomplish the same, but Baan will generate the table structures for you, and you can use definition files instead of hard layouts, incase the table definitions change.
A great document for all of this is from Baan:
Document number U7137A US
Kind of hard to find, but out there on the support site. It's not registred very well, it's called Exchange User Documentation, a word document attached to an email they have posted... Here's the path to find: