The 5.14 release contains a lot of XML Mapping improvements. The modeler had asked you to reconfirm the new mapping structure.
That structure is used for exporting and importing the templates into different applications. I haven't downloaded 5.14 yet so I'm not sure with the impact is. We'll be looking at that in the next couple of days.
I just looked at the impact of the 5.14 changes to the Excel Importer and Database Replication modules (they share the same code base).
Both modules will have issues in 5.14, the modules will only be able to 'create all objects'. Any synchronize option that searches for existing data will most likely give you a runtime error when synchronizing.
Also the module currently does not support the new Decimal type, if you map the excel/database value to a Decimal attribute the module will ignore the errors because the attribute type is not known.
We are currently testing and fixing all scenario's