don't worry guys. it could just be that you were assigned a new file number as with my case. most probably, when you receive the acknowledgment from your visa office, you'll notice you have another/new file number. don't panic yet. give it a few more days
(however, in my case, i still can check ecas with both my new and old number. strange eh?)
its jst probably some glitch in their system. and they usually take their time updating ecas status. so chill, relax. everything will jst be fine
best of luck . .