If I want to keep bm in deep freezer, do I freeze straight in the deep freezer or do I freeze in refrigerator freezer first and transfer over?

Straight into the deep freezer will do. Fresh milk may be placed in a separate deep freeze (chest-type freezer) for 6-12 months. Milk can sometimes be stored even longer if it is immediately frozen and is frozen at the lowest possible temperature (-20 degrees). If previously kept at room temperature, or stored in a cooler or refrigerator before freezing, storage time may vary. Deep freezing is best.