Hi Alex,
If you write to them , in regards of any inquiry, usually they are answering very fast, but only via e-mail.
I had contacted them last week on inqury of passport change for my child and after an automated answer, the next day they replied that it is not a problem to update the the new passport with their office if the new document is issued.They also asked me if I was approved by Sydney in e-mail.
Here is the e-mail address that I've contacted them: bucharest-immigration @ international.gc.ca
Good Luck!