gistfile1.txt

query1 = `
  mutation {
    startStreamableWorkout(input: { exerciseSchemaVersion: 1.0 }) {
      workout {
        exerciseSchema {
          version
         schema
        }
      }
    }
  }
`;

result1 = {
  startStreamableWorkout: {
    workout: {
      exerciseSchema: {
        version: '1.0',
        schema: { ...schema data }
      }
    }
  }
};

... Do half a workout - app crashed
... reload app - query the in progress workout from the store 

query2 = `
  query {
    workoutById(id: 1) {
      exerciseSchema {
        version
        schema
      }
    }
  }
`;

result2 = ~ result1;

... resume the workout

... I guess this does not work if between query1 and query2 you changed schema version...? 
... Perhaps in that edge case just check workout.exerciseSchema.version = current version -> reject and say you can't resume