+1(514) 937-9445 or Toll-free (Canada & US) +1 (888) 947-9445
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For whomever this might still be interesting,

I called IRCC and talked to an agent about this. He advised to send the copy of the old passport together with a letter of explanation, describing the situation. He also said that I can send the new passport only and it should be fine. But I decided to go with an LOE and previous passport copy.

Let's see how it goes.

Good luck!

Hi, I wonder if we need to send a copy of all passport pages, or just the front-n-back of the old passport. Also, if you could let us know if everything went smooth, that will be great.
Thanks!
 
For whomever this might still be interesting,

I called IRCC and talked to an agent about this. He advised to send the copy of the old passport together with a letter of explanation, describing the situation. He also said that I can send the new passport only and it should be fine. But I decided to go with an LOE and previous passport copy.

Let's see how it goes.

Good luck!
its right . you can send both passport also. must update new information online
 
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