In the August, 27th 2012 Theocratic Ministry School for Jehovah's Witnesses, Why 607 BCE?

Why do Jehovah's Witnesses still use the improper 607 BCE date for the destruction of Jerusalem, win the date has been established by scholars as 587 BCE?. Even scholars, whom the Watchtower used to bolster their 607 date, have refuted the date!, and have expressed anger that the Watchtower quoted them out... show more Why do Jehovah's Witnesses still use the improper 607 BCE date for the destruction of Jerusalem, win the date has been established by scholars as 587 BCE?.

Even scholars, whom the Watchtower used to bolster their 607 date, have refuted the date!, and have expressed anger that the Watchtower quoted them out of context, and that they all support the 587 BCE date as the destruction of Jerusalem..

Here is the Aug. 27, 2012 TMS paragraph in question;
*** w07 8/1 p. 8 par. 5 Highlights From the Book of Ezekiel—II *** 29:8-12—When was Egypt desolated for 40 years? After the destruction of Jerusalem in 607 B.C.E., the remnant of Judah fled to Egypt despite the prophet Jeremiah’s warning. (Jeremiah 24:1, 8-10; 42:7-22) That did not prove to be an escape for them because Nebuchadnezzar came up against Egypt and conquered it. The 40-year desolation of Egypt may have followed that conquest. While secular history provides no evidence of this desolation, we can be confident that it took place because Jehovah is the Fulfiller of prophecy.—Isaiah 55:11.

Even this 40 year desolation of Egypt, has been placed at a time in history where there is no supporting archaeological evidence to support the years quoted.

Why do they still use 607 BCE as this "Date positive", when the facts support otherwise?.
Update: Disclaimer; This Watchtower information is provided for me by one of Jehovah's Witnesses. I am using this printed literature legally, and in accordance with all copyright, and WTBTS recognition of ownership.
3 answers