It could literally mean you’re just being assigned a new adjudicator for whatever reason.
During my last PR, I was assigned one particular adjudicator and spoke with her on two occasions. She requested a couple docs, so I gave them to my PSO, who uploaded them into the system. Two months after they were uploaded (my PSO showed me a screen shot of it), a totally different adjudicator called me requesting the same docs be faxed to her.
Concerned me more that there was some loss of communication behind the scenes than anything else.