Merged Past-life Memories Syndrome (MPLMS)
A condition, in which someone accidentally mixes past-life memories from separate past-lives into a memory from one past-life.
'Like many reincarnated people, I think that I had a bad case of merged past-life memories syndrome (MPLMS): I was confused that my past-life memories from my past-life as a muse were from my past-life as a mermaid, until I figured that these memories were from separate past-lives.'