I'm searching for AN-1007 Application Note, Using the ADAU1761 in DSP Bypass Mode to Emulate an ADAU1361.
I had recently gone through all the registers and made note of the differences. Then I analyzed the differences and made suggestions as to what writes are required.
Since you asked about AN-1007 I went looking for it. You are correct that it is not on the web site. I did a lot of searching and finally found it in the archives. Fortunately, it pretty much showed the same writes that I came up with. I will include both. My writeup was a quick writeup and not formatted but it has a few more details.