You can use:
With this you don't need to move o rename, instead you create alias for each datafile.
If you already clone the database with a consistent split , why don't you use this procedure to make your DRP ?
I hoppe this help you
Yes. We can rename the asm directory.
Renaming a Directory
RENAME DIRECTORYclause of the
ALTER DISKGROUPstatement enables you to rename a directory. System created directories (those containing system-generated names) cannot be renamed.
Example: Renaming a Directory
The following statement renames a directory:
ALTER DISKGROUP dgroup1 RENAME DIRECTORY '+dgroup1/mydir' TO '+dgroup1/yourdir';
DG standby is in a different storage and we are replacing storage based mirror ( global mirror) with dg.Renaming the file can be done but i would need to move those files to the new directory. Like JA mentioned looks like the only option is to create alias. Non empty ASM directory cannot be renamed,otherwise things would have been easy.