I really believe that if this was the intention of the IRCC, they would be transparent and inform this as one of their policy changes.
I mean, there are still places that have IELTS schedules opened, and probably a lot of people are booking these tests ASAP for the fear of losing a draw, even though they should be at home, instead of exposing themselves to the risk of taking the IELTS during a pandemic crisis. That includes both inland and outland candidates that are not eligible to CEC.
I'm pretty sure this is something that IRCC has considered. Therefore, if they really intended to continue for the following draws with CEC-only candidates, I believe they would already warned us, to avoid unnecessary expenses and dangerous displacements.