RoS restore to new hardware ERRRORS

I have problems restoring configuration from one routerboard to another one. This happens everytime I chane slower router for better.

I tryed export and import.rsc and it shows errors like this:
failure: already have device with such name

but from what is there written I cant find out where it stops and what name is same.

Is any better way to restore configuration?

This same error was if I tryed to make compact backup.

The only way that worked was manually copy all lines..but there is problem if there is more rules inserted at once winbox freezes and I have to relogin to winbox.

Which routerboard models?

Copy & Paste one line at a time, or conf blocks, until you get the error, so that you know what do you need to fix.