4.7 to ECC 6.0 known issues after migration

Hi Experts,

Just want to know if there are known issues/bugs in ECC 6.0 after migration from 4.7? We encounter issues (OSS notes to be applied) while testing in ECC 6.0 but we want to make it another way around. Instead, we want to know all the notes to be applied first (in ECC 6.0 after migration from 4.7) before testing as this eats up a lot of time and causes delay. Is this possible? Can I have your thoughts on post migrate issues?

Points will be awarded! Thanks in advance.

Br,

LM