Question:
As per the OB, the 505 Pz II “returns” to the West in Jun I 44, but is not mentioned previously.

Answer:
It should be an “Arrive” instead of a “Return.” (The Axis OB originally included April through June 1943, but these months were dropped in favor of the July 1943 start up. The 505th is in the West in April 1943 and goes east before the July 43 start-hence it is actually returning in June 44 in the context of the wider OB. This listing inadvertently didn’t get changed for the SF-only context.)

Source:
TEM 41