Its one of those really strange things that you have no idea the how and why of it all, am just really pleased, that they got mine done so quickly, I was so worried about going through immigration on Wednesday and getting all the questions, as I just wasn't going to lie, but have packed up my life and house over in UK and going to say in Canada now and I know how that would be taken. At least I have my letter with me asking for Passport so that they can put my visa in it, so will be looking after that very very carefully!
At least everyone else knows that the process is working and things will be progressing for them shortly even if no AOR is ever received or eCas updated.