He he I am sorry....
Yup, Jews migrates as well every where. For Indonesian case, they also comes, even before Dutch came to Indonesia. Most current Jews who still adopt Judaism in Indonesia are descendent of Dutch.
But many of Jews decendents in Indonesia I speculate have become Muslim. Mostly they are real Jews, I mean their ancestor migrate directly from Middle East to Indonesia, before the arrival of Dutch. There is story about this in BBC Indonesia.
While many are descendant of Dutch, their offspring can end up as Muslim, Christian, while very few of them still adopt Judaism
We can see from the political arena :
Yapto (Center)= Muslim
When he was younger
Her mother is Dutch, these four Dutch women are Indonesian citizens, among those who fight for Indonesia Independence.
Entrepreneur
Irwan Mursy (Muslim) with her wife Indonesian musician (Maia Estianti)
Just example