upgrade to AX 2012 R2

I thought an upgrade from AX 2012 to AX 2012 R2 was easy
My customer asks me if we could upgrade to R2. I should him no problem. But it had acutely more work than I expected.
- There is country localization in the code every where
- The kernel build number went to 6.2 so we had to rebuild all ASP pages for the list pages and import them back to the AOT.
- All AX specific form .net stuff had a lot of build related numbers in it.
- We had to recompile all custom reports in Visual studio, because the reference where all pointing to 6.0

It is a small post but with a big impact.

example in a Form.