I was on IEC when we applied. We applied September 6th and my IEC expired December 16th. My work permit didn't come until the start of Feb but I got it all the same.
So you must get implied status or mine wouldn't have come when it did, or so I assume.
I thought the same and the people at the immigration call centre keep telling me the same. That I'll have 'implied status and can therefore carry on working'. But I've seen a few posts on here stating otherwise.
Do you mind if I ask- did you carry on working between the time your IEC work permit expired and you receiving your new OWP?