Thanks so much for the response.
BTW, do you know if stocks is not really acceptable as POF?
This is what the IRCC website says:
What we accept as proof
Funds must be readily available to you. For example, you can't use equity on real property as proof of settlement funds.
The funds must be available both when you apply and when (if) we issue you a permanent resident visa. You must prove to an immigration officer that you can legally access the money to use here when you arrive.
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That said, what I takeaway from this is it’s most important that the funds are
legally accessible to you.
So if your stocks can be withdrawn easily and you can get a hold of the funds, that should be fine.
What you can do then with your plan to move your funds from UBS Stocks to another bank account is document the process and share that with IRCC via webform, if only to assure them that the funds are accessible.
That’s the best situation I can imagine this playing out.