When you update to Avaz 4.1, you will automatically retain your existing vocabulary in Avaz. However if you wish to start using the new pragmatic vocabulary, you can replace your existing vocabulary with the new Pragmatic vocabulary from Settings > Backup & Restore > Reset to Avaz Pragmatic vocabulary

Note that this vocabulary uses a horizontal page scroll compared to the earlier Avaz vocabulary which uses a vertical page scroll. 

Click here to see How to restore my previous vocabulary with vertical page scroll ?