I had the exact same thing happen! I am a February 2017 applicant and recently got AIP on February 28th 2018. Now my ECAS states that they started processing my application February 28th 2018 too! It's very strange IMO, but I'm just going to think of it as a good sign. My ECAS status read 'Application Received' for the longest time and now says 'In Process' so any step forward is a positive for me.Something weird happened to my status on ECAS, as some of you know my application was sent on March 10th 2017, it said it was received on March 15th 2017 and they started processing it on March 28th 2017, now they added another line that says "We started processing xxx 's application on March 6, 2018."
I just dont get it and now I'm freaking out!
How could they start processing it now 12 MONTHS AFTER I sent it? This is so weird... Did someone here experience something similar?