In response to IRCC’s tweet there’s a screenshot of IRCC response to a webform request which says there’s no prohibition on having 2 PR applications at the same time. Just check the tweet and it’s replies.For all those considering applying again as CEC, be careful.
IRCC Confirmed you cannot have more than 1 application:
I have a friend whose CEC application was rejected saying that you already have an active EE application (FSW-Inland) and the fee was also not returned, and yet his FSW-Inland application is still under processing.
The only correct way to apply to CEC is to first withdraw your existing application, and then apply again from scratch.