Upgrading from 1.3.0 to 1.4

[Alexander Wallace]

Hi all!

I'm facing an upgrade from an app that uses jackrabbit 1.3.0 to a 
version of the same pp that uses jackrabbit 1.4.0 (api) and 1.4.1 (core) 
...

We have number of documents in the repository.

My question here is: Do i need to do something to the data to be able to 
upgrade? How can i find out what to do?

Thanks to all in advance!