Boot Reapir Disk wiped mdadm RAID1 data?

First, I had a backup, so no panic. I just would like to know what happened and what could have been done to recover the data

I was experimenting with Boot Repair Disk on my Ubuntu 15.04 server. I first ran Boot-Info and noted that there was Grub installed on the RAID1 drive as well as the CF/IDE drive that was the bootable OS. I don't know how it got on the RAID1 drive to begin with. I chose the default repair, not advanced. Boot repair proceeded to "restore" Grub on all the hard drives in the system (1 RAID1, 2 non-raid, and CF/IDE drive). After the repair, the RAID1 drive appeared to be empty. The array was reported as "clean" though. I ran Boot-Info again and noted that Grub was still only on the RAID1 drive and the CF/IDE drive as before, not on the other 2 non-RAID drives.

Any obvious answers?

Thanks,

Todd K.