1. Create a new project in which you import all R3D files.
2. Attach proxies to those files
3. Import the project file which you edited with proxies. Once premiere ask you to relink, just click offline all.
4. Select all the files that are offline (which should be proxies) and attach proxies to all of them.
5. Then choose reconnect full resolution and navigate to the r3d files . Once you reconnect to one file, it should automatically reconnect all of them