EAP 6.3 will be introducing new versions of domain configuration xml schemas. These will basically be schemas containing some subset of the diff between the AS 7.2 schemas and the WF 9 schemas.
These schemas and parsing thereof need to be forward ported into WF.
Hopefully the schemas used for EAP 6.2 are already forward ported and this is mostly about 6.3.
This is a parent task to capture the overall requirement and the task of analyzing what areas need the forward port. Subtasks or linked issues should be used for the specific porting tasks (e.g. one per subsystem)