Same hereI am also confused, it was submitted only once back in April 2017 via IRCC webform.
Somehow, between that time and Feb 2018 they finally received it...
Uploading Schedule A was a big headache when back in March 2017 my case they confirm received it that time… but they still processing criminality check since last November… seriously don’t know what to do … my MP said contact them again on JULY since BG is not done yet. 16months waiting … don’t give up hope I guess