I'd risk it, and make a pass with brand new, unfired brass, straight into the 22 ARC die, and see what happened. I'd try a sample size of 5, and if all 5 didn't come out perfect, the rest would get the Grendel sizer first, then the 22 ARC sizer.
"The System" is behaving weirdly, and I fully think it's because they'll have to testify "on the Hill" again... Reporting "Average Wait Times" will be a focus in hearings. I firmly believe that's the only reason this is happening.
16 hour approval.
Check it:
I'm 100% success rate so far just by running the fired Grendel through a Grendel die first, then straight into the 22 ARC die, annealed or not. I'll anneal them all first, just to make that process easier on the brass, and hopefully make it last longer.