1952: UNRWA already employs 6000 Palestine Arabs to run their operations. Attempts at integrating or resettling displaced 'refugees' are already being challenged and will soon be abandoned.
Already at this early stage, a persistent problem was that people 'pass a newborn baby to register them and also have a 'surreptitious burial' to avoid reporting a death.
As each birth registered also means an allocation of funds to that particular area for medical care, food and housing, there was always an incentive among local Palestinian UNRWA employees to allow it.
UNRWA aid was always on sale in the supermarkets of Gaza because the number of people on the rolls was always lower than the actual number.
By 1961, UNRWA estimated from statistical analysis that around 100,000 deceased persons were on their rolls, around 10% of the 'refugees'.
That would not of course be including all the falsely registered births.
Any attempt to investigate was met with extremely hostile reactions.
The Palestinian Authority has never conducted a census. Israel gives out ID numbers based on what is reported to them.
In 2016, UNRWA reported they served 450,000 Palestine Arab 'refugees' in Lebanon, not including 32,000 Palestinians recently displaced from Syria.
The following year the Lebanese government performed a census of them.
It turned out there were only 174,422.
This is a wider issue, though of course has implications concerning the Hamas death statistics.
