.. You wish to temporarily disable all foreign key constraints on the table since this is an archive database and you orphaned records are acceptable for this one load only ..
The question was asking how to temporarily disable the constraints, but the real question is:
Why you would even want to keep foreign key constraints on a historical archive table that you know will contain orphan rows?
"Do not seek to follow in the footsteps of the wise. Instead, seek what they sought." - Matsuo Basho