How to import data form Sambapos2 to new version Sambapos4

How can I import data from Sambapos2 version to Sambapos4? Thank you

There is no migration available from V2 to V3/V4.
Due to dramatic database changes you need to create a new database.

Hello John S. Thank you very much for your promptly reply. By the way, could you help shoe me how to purge old sale transaction data? Thanks.

Database tools module has the tool required to wipe transactional test data. It is by far the easiest way.