Could you elaborate on what you are doing and the problems that you are running into?
What version of Premiere ELements and its Elements Organizer are you using and on what computer operating system is it running.
My problem in understanding your question involves the following thoughts.
When you import files into Premiere Elements or its Elements Organizer, the originals remain at the computer hard drive save location. The program has just thumbnails of the files, and those thumbnails need to trace back to the originals at the hard drive save location. Is the problem in a shortcoming of the Lightroom program?
We will be watching for clarification.