Thank you so much for your help.
What I see is that the following conditions need to be met to work on Canon:
1) Exposure Mode = Auto Bracket
2) AEB Bracket Value = 0
I've tried to attach files with:
a) 5 bracketed images
b) 1 normal image
c) screenshots of the relevant fields for 2 bracketed shots and 1 "normal" shot
I'll add extra posts with more files as I can only seem to add 3 at a time.
I look forward to the next release.
Thanks again.