I sent my wife's PR application on May 13 and it was received May 15. Yesterday we received an email saying "this confirms that your application to Sponsor a Member of the Family Class has been received by Citizenship and Immigration Canada (CIC) on 2018/05/15."
Just a quick question - we've sent it in twice before and had it returned to us for a variety of reasons. This is the third time we've sent it in and the first time that we received an email from them with our UCI and application number. I'm wondering if that means that we don't have to worry about getting it sent back because of incomplete/missing information? Like is this the step that moves it toward processing?