Actually what you overlooked in the operations bulletin are there are 2 kinds of refusal,One is when the application is complete and it is rejected you have implied status until the decision is made and an incomplete application in which case the status expires on the document expiry date.The trick is to have a complete application when you file an extension to buy implied status.This topic was discussed extensively on the CAPIC forum or the forum for IRCC members and Immigration lawyers.They try to send in complete applications as to have a good refusal