"The Cold Room" (1984 cable movie)
starring Amanda Pays, George Segal
From IMDb reviews:
1) The whole plot involves people in present-day Germany, one of whom discovers a link to a past romance with a character from Germany's Nazi past.
2) A British girl is traveling with her estranged father in order to attempt to rebuild their relationship. Shortly after they arrive in East Germany, the girl begins to suffer from strange sensations and mental lapses, where she remembers events from World War II that she could never have experienced herself. Is this a case of mental breakdown, is it possible memories from a past life, or is she dealing with a rip in the fabric of time and she is actually experiencing the events for real?