Just to be clear, after you switched to your custom profile, did you actually choose the option in Lightroom to save new camera defaults?
Yes. I picked an image and did nothing to it except change its camera profile. Then I clicked "Set Default..."
Did you go to Develop > Set Default Settings and choose Update to current settings?
Yes. I've tried updating my settings that way, but it also does not work.
Here's the odd thing: I have no trouble updating my settings for other cameras. This method worked for updating the settings when this camera was still on version 1.00 firmware.
I habe the same problem here,
no more default Settings on import!
I am also using a Sony A7R II Firmware V 2.0
But here it at first it worked on the Sony Firmware V2.0
The Problem started after the Lightroom Update to the current Version CC 2015.3