Perhaps in addition to my suggestion you would first need to move (copy) the FAT32 partition over to the Win10 drive in the unformatted partition. I'm not sure if you'd need to split the unformatted partition into two so one would be the same size as the FAT32 partition and the other could be come the "System Reserved" partition or if you could just image it on over. Since the Win10 drive doesn't currently contain a boot partition for UEFI I assume the unformatted partition is only there to save the space for doing something like this. But I have to say UEFI still confuses me a bit because I've only read about it - I haven't actually WORKED with it. Like you guys have been kind of saying, I think the implementation of UEFI and GPT booting could have been thought out a little better.
My thought is that if you clone the FAT32 partition maybe it doesn't matter so much what's in it - though a little homework certainly wouldn't hurt. I THINK I've read that the FAT32 partition has to be the first on the drive. As for the BCD info I was hoping the "fix boot issues" option in the Reflect media would take care of that. Heck, I was actually wondering if maybe it would take care of creating the FAT32 partition since it appears you might have space to be able to create it but that's probably a bit far-fetched. I was looking at EasyBCD earlier as well - I could have looked into it more but it appeared to make (much) easier what can mostly already be done manually. That's why I stopped reading - I prefer the hard way, at least until I learn and understand the process.