When restoring purchases on a new device or one which has been reset to factory defaults, some previously obtained items such as map packs and weapons are not restored.
If the items in question were obtained for free using promo codes, this is no longer possible. The Limbic Vault was removed in the v1.10 update of TowerMadness. As a result, any items unlocked using promo codes are not transferrable to (or restorable on) other devices. Only items purchased through the Shop by means of in app purchases can be transferred or restored. Thanks for understanding.