Bounced Mix not same as playback

UPDATE, I have done another test without any plug in on the 2buss. And when re-did the test, it is a perfect null back in Samplitude.
As I very rarely use any type of processing on the 2buss, this could explain why I normlly have no issue with my bounces…
There is something that doesn’t add up, but I don’t think it is that relevant
I have found old posts mentioning similar findings…where people swore that the bounced mixes where truer to the original if not processed on the 2buss, or processed routing all channels to a submix and not the main 2buss… but they were pretty much all inconclusive.

Cheers

AB