Moritz is listed in the 1939 census of Breslau at Sonnenstrasse 38, an address he shared with four people who are presumably his parents and siblings.

Heimann, Rosalie and their three children were deported from Breslau (Yad Vashem mistakenly has Bremen for Rosalie and Breslau for the rest of the family) to Izbica ghetto on 13/04/1942.