11th (Northern) Div, DAC

[Graham Mark]

This cover from the DADOS to the OC DAC at Ferdan, on the Suez Canal, 18 April 1916, is a puzzle.
According to the Order of Battle, vol 3A, the DAC remained in England when the Division sailed for the Aegean in July 1915, and did not rejoin the Div until it had moved from Egypt to France in July 1916.
Can anyone solve this one for me.
Best wishes to all.
Graham