Ok a question (and I apologize in advance for my OCD 
).
Core has the latest series of Firestorm as Fury of Firestorm Vol 2, however there appears to be no Fury of Firestorm Vol 1 in Core. Surely Firestorm, The Nuclear Man Vol 2 (1982-1990) should be renamed as Fury of Firestorm Vol 1 as that was how that series started out (though it lost the fury of at #50). As for the addition of “Nuclear Man” that makes my head hurt LoL.
Phil
Hi, thank you for bringing this to our attention! Spotted this when the new series got listed in the previews.
We made the decision to split up “Firestorm, the Nuclear Man, Vol. 2”, so anything from #65 to #100 remains as is. Issue 1 - 64 has been moved to a new title: The Fury of Firestorm, Vol. 1. Along with the Annuals #1-4 (as #5 belongs with Firestorm, the Nuclear Man, Vol. 2 Annual). Like I said, we spotted this when the new series got listed and we didn’t quite know yet what to do with it. Just to play it safe we ended up calling it Vol. 2. This is all in line with the indicia and the title on the cover. Thank you for posting 
@CLZ_Justin, I have all 100 issues and just did an Update from Core and had the Series set to Replace. When I was done, it said The Fury of Firestorm, Vol. 1 was missing issue 23. I checked and it was still hanging out in Firestorm, the Nuclear Man, Vol. 2. I just manually moved that single issue, but I thought was odd…
Checked in with Alwin on this. Could it be that this was either unlinked or that you had some custom data there? We’re not going to know now but that might’ve just been it. Also, I completely cleaned up what’s now “The Fury of Firestorm, Vol. 1”. You might want to update the data for those issues. Corrected and added tons of release dates, creators and other stuff.