With author's permission I am publishing document dealing with migration between MPC5646C to MPC574xG devices.
Document was created in year 2013, it was never been officially released, it is not maintained and it is shared AS IS.
There is NO WARRANTY and NO SUPPORT can be expected.
However, it could be helpful for initial orientation on which points to look during migration work.
If it is used, user should always refer to latest device's reference manual for possible specification changes.
Thanks to Christian Michel-Sendis, Viktor Fellinger and Jose Cisneros for their great job.