Sorry for the late reply as I just saw your message!Hi. A friend of mine is also in a similar situation. he request for a withdrawal through webform but didn't not submit the signed letter. he decided to cancel the withdrawal and called IRCC. An agent helped him put a note a his profile that says he wish to cancel the withdrawal. However, he was also told that a signed letter is also needed to cancel the withdrawal. He then summited a signed letter to explain the reason . 2 months later his eligibility is passed. Did you get any official reply that mentions the cancellation has been accepted? he is worried because he did not receive any reply afterwards
I ordered GCMS notes, on which I found a note confirming that my withdrawal request was canceled and they continued the processing of my application after that note by MEP & BIL. Then one month after giving my biometrics, my eligibility was passed.
Hope this information is helpful!