You shouldn't have any issues with upgrading. XML Commons External (a.k.a XML APIs) v1.4 is binary compatible with older versions.
XML Parser Development
IBM Toronto Lab
Avner Aviad <firstname.lastname@example.org> wrote on 09/29/2010 02:54:15 PM:
> I am planning an upgrade of xml_apis for a VERY large organization
> with many dependent teams. Is this the right place to discuss the
> track record of such upgrade? What should I expect? Can anyone
> discuss the known issues with this upgrade? What caveats and
> breakage should I expect (if at all)?
> (My own inspection show only additional functionality which is a
> good start. Some teams are already upgraded successfully)
> (By the way, the main reason for this upgrade is an planned upgrade
> of Batik 1.6->1.7. I will be glad to hear or get resources about the
> upgrade path too)
> Thanks in advance.
> Avner Aviad
> Yam Software