^These dates are the checkpoints where traffic is redefined, unfortunately, you were inbetween one traffic layer ending and one beginning, it takes time before they'll spawn again as you found out.
GameEntryDate=44a Layer 1944/06/01 GameExitDate=1944/09/30
GameEntryDate=44b Layer 1944/10/01 GameExitDate=1945/08/31
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