Updating from 2.2.0 to 2.5.0: Migrationpath and Compatibility issues

Hi,

in a project in which we are using xmlbeans 2.2.0 and used it to 
generate classes for multiple different schema files, we now need to 
update the xmlbeans lib (we just created a schema, for which 2.2.0 can 
no longer generate correct classes). Is there a document describing 
(in-)compatibilities between these versions and what to do to update?

We are using xmlbeans mainly to read in xml files. Rarely we create 
files with it.

I like to now specifically:
  1. Do I have to regenerate all schema specific libs from the .xsd 
files?
  2. Are there known incompatibilities in behaviour?
  3. Are xmlbeans 2.2.0 and 2.5.0 declared to be compatible? What kind 
of compatibility is meant here?

I did not find any information concerning this migration use case on 
the apache page. If some one could point me to it, I would be more 
than happy to read. The only thing I could find, was the pointer to 
the common error of not adding the qname library to the class path. 
But, I was looking for a positive list of what to do, so that an 
update will work in the first place.

I guess (but I like that to be confirmed) that update from 2.x to 
2.x+y should work without regenerating, without compile time issues, 
and (if I do not depend on a buggy behaviour in 2.x) without changes 
in the application code, unless I like to use a new feature.

Any pointers?
Cheers,
Oliver

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