Last year, we had a failed PR application as "conjugal partner". I recieved the sponsorship approval from CPC-M, the file was transferred to Buffalo, my partner got his AOR and then a refusal. I was never able to sign into e-cas at any point through the process.
We now have a PR in process as spousal sponsorship. My sponsorship approval was dated May 25th. Then I could log into e-cas. As it turns out, they assigned the same client ID as the previous submission and now I can see all the e-cas information from last year :
At this point I see decision made for CPC-M, but there is nothing (showing "not available") for the Buffalo processing. According to the sponsorship approval, the file was transferred May 25th. Not quite 2 months.
I would say e-cas is not consistent