As a matter a fact yes I have, but the chance of getting called in for CI right now is slim to none. Last month they were still calling guys in that applied 1 to 2 years ago. Although they're calling in guys that actually applied for CI.
I've also heard CI's being offered Signal Maintainer positions and Signal Maintainers being offered Ventilation & Drainage Maintainer positions. The practical exams for these three positions are very similar from what I heard so that's why they can offer you another opportunity.