Choose whether or not to keep the original files following the rename operation. By default this is on, but you can choose to have the files removed.
Please read and heed the final warning.
Files not having fully qualified references, or referenced within XLST, XML or GatewayScript are not addressed by the file renaming operation. There is no possible way to determine every means by which a file can be referenced.
Before continuing, it would be wise to verify the files being renamed are not referenced in less obvious ways, or by runtime variable references.