[TYPO3-mvc] Extbase extension created in TYPO3 4.5 to 6.2

[Cristian Patrichi]

I have an extension which was created with Extension Builder in TYPO3 4.5 (no namespaces).
Now I want to use it in TYPO3 6.2, but I get many errors. I started to fix them manually but they are too much.

Do you have any idea if is some script or extension which can migrate automatically all differences to be 100% compatible with 6.2?

I know I can make a new extension with the newer Extension Builder and copy the old code, but I don't want to waste to much time and I want something automatic.

Thank you.