Update on my March application: My wife (the sponsor) got an email this morning from CPC asking for a missing document (my daughters birth certificate - they wanted a copy that includes both sides (yes, even the back - which is blank...). Instead of sending the application back they included a link to upload the requested doc.
A little backstory: I was originally an early February applicant but it was sent back in early March for a missing document (payment receipt for my non-accompanying non-custodial daughter). The returned application had a cover sheet from CPC with a checklist of possible reasons why the application was returned. Only one box was checked. I included the receipt of payment AND a copy of the CPC checklist, and hand wrote a note on this checklist explaining that I've added the missing doc.
The email this morning indicated that there was a clerical error with the first checklist, and that it also should have included a request for the back page of the birth certificate. I'm sure that had I not included a copy of their application return checklist they would have sent my application back a second time.
So the moral of the story is, if your application gets returned for missing info/docs, include a copy of their return checklist back with your application. This way, when someone new opens your returned application they can see that you've complied with their request, and that if further docs are needed it's on them. It may help avoid getting your application returned a second time.
Okay, on we go!