I disconected external device which was configured as rmt0. When I connect it again and run cfgmgr device name has changed (internal drive which was rmt1 is now rmt0 and external drive was rmt0 and is rmt1) and I dont know how to back it out. The thing is that for all backups I use new modell (external drive) ans all backups scripts are configured to run on rmt0 (which is now old internal drive). I can't disconnect internal drive and run cfgmgr I've to change it back as was (internal has to be rmt1 and external rmt0)
Thanks for any help/info how to back it out.

did you change the bus order? It should come back with the same name.

try this

rmdev -dl rmt0
rmdev -dl rmt1
cfgmgr -v

then verify

I don't know how to change "bus order" could you help me to change it?
I rerun config and it doesn't work (probably because bus order).