RT-11 disk copying question

I'm trying to copy one RX02 disk to another on my DSD-440 dual RX02 unit, with a 4.0 RT11XM system running on an 11/23. I first formatted the new floppy with FORMAT/VERIFY DY1:. It ran for a little while, and then verified for a little while. Next, I tried to do an INIT/BAD DY1:, hoping to write a directory the new disk. It reads my RT11 disk in DY0:, and then asks if I'm sure, and then exits, without ever accessing DY1. If I do a DIR on DY1, it complains that the directory is missing, which makes sense since it never appeared to write it in the first place. I did notice that there is no INIT.SAV file on the OS disk, but I assume its an internal command if it goes as far as asking me a question. What am I doing wrong? Thanks, Tom