Answer :
it is important because they are in hiding and if they are to be found they will go to concentration camp and eventually be killed so c the families are in hiding etc
In this excerpt from "The Diary of Anne Frank" it is important that the Van Daan and Frank family names do not appear on the ration books because The families are in hiding, so no one can know they are receiving rations. On July 1942, all the members of the family have to hide from the Nazis because they are Jews. The Franks, the Van Daans and Dussel, hide for almost twenty-five months in an annex of Mr. Frank's office. It is Miep Gies and Mr. Kraler who are in charge of bringing them food and other needed things.