We weren't asked to submit any POF again. We were only requested to have our medicals done. Afterall, we've declared to them that we were eligible to immigrate to Canada and we have the required funds. So if someone withdraws his/her money from the account he submitted for his/her POF that could be very dangerous/disastrous from my experience. Because these visa officers will not tell you anything, they will just assumed you submitted a fake bank balance statement or you are lying that you have such money in you account. And silently waiting for the 12 months to elapsed after your medicals, which is very sad
So a piece of advise here, when anyone submits his/her application with the POF he/she declared that he/she has,
just leave it as it is, if possible till all the process is complete. My friend used his POF money after he submitted his application and that almost cost him his visa. Because most, if not all the visa offices will verify your POF before they issue you a visa. We didn't use the AVO, we both used another visa office where we resided in then.