In the Rename Panel Is it possible to set the Options checkbox "Automatically rename if new filename exists" by default? In my case it is the case for the last option "Use preview list to build macros", so it seems possible to modify something somewhere.
zu
Call the Renamer with AUTORENAME.
@nodeselect
Rename ADVANCED AUTORENAME
https://www.gpsoft.com.au/help/opus12/index.html#!Documents/Rename.htm