And those who chose to stay received exactly what Israel promised.61000 out of 64000 left, ....
From Whalid Khalidi, the terms Haganah offered
The Arab Emergency Committee thereupon asked Stockwell what the truce
conditions were. Stockwell disappeared and, according to Saad, “ten minutes
later returned with a printed copy of the Jewish conditions.” These were (as
retranslated from Arabic):
35
1. All military equipment and weapons to be handed over within three
hours at (a list of places follows).
2. All foreign males to be surrendered within 24 hours in order to be
repatriated under Haganah supervision.
3. All Nazis and Europeans in Arab ranks to be surrendered. [There were in
fact none.]
4. The military equipment in (1) to be handed over to the British but later
to be handed over by the British to the Haganah before May 15.
5. A 24-hour curfew during which Arab houses would be searched for
arms.
6. The trial of all persons possessing arms after that.
7. The removal of all road blocks and obstacles in the Arab quarters.
8. After the curfew things to go back to normal, and the Arabs to become
citizens with the same rights as the Jews.
9. All further meetings between the two sides [i.e., Arab and Jewish] to be
held at the Town Hall
http://moodle.technion.ac.il/file.php/2319/HAIFA_downtown2012/haifa_histories/out_3_.pdf