Never Transfer Just Before Review Season

After two very good years as an SDE at Amazon, I decided to transfer to a new department to try something new. Even though my old manager always treated me pretty well, I was really surprised when my new manager told me that my old manager wanted to give me a very bad review after I transferred as he tried to blame all prior year team problems on me. Luckily, all of the 360 degree feedback my new manager got for me proved how good I was and he was good enough to say he wanted to handle my review even though I only reported to him for a few weeks before the reviews started. If he had let my old manager handle my review like he wanted, I would have ended up with a really bad review even though I didn't deserve it. The OLR process doesn't seem to have any checks and balances against bad managers giving incorrect reviews, so I was really lucky that my new manager understood this. Hopefully, others can learn from this lesson and never transfer just before review season.