Something similar happened to me with CC between the regular TC and their Legal Tech TC. I emailed grad rec right away, saying I submitted the wrong draft, but obviously the deadline had passed so they could not simply allow me to withdraw my application and apply again for the right vacancy. They answered saying that I should pass the WG first and that if successful they would then speak to the relevant team to see if my application could be transferred.
I passed it and emailed again, then they did not get back to me before rejecting my application a week and a half after. I emailed asking for which route it had been assessed, and they told me it was for the one I technically applied for, not the one I was actually going for. I asked if they could give me an answer from the perspective of the other route, and they replied extremely quickly with a second rejection, without addressing my situation but this time with saying, in a generic message, that I produced a solid app and should reapply next year.
The response was so fast that I have doubts on whether they actually went through my application again at all or not, it was quite late already in the recruitment process... Looking back, I should have called to check in much sooner and insisted more.
Obviously, no idea whether OC would have a similar approach, but hopefully, it goes better for you!