Intake Manifold O-rings

The manual states that when reinstalling the intake manifold, to "Lubricate the 2 O-rings 34x2 with lithium-base grease and insert them at each side between the intake manifold and the cylinder head" and then when installing the rubber flange the manual says "Attach rubber flange and new O-ring 47x2 with hex. screws M8x25 and M8x30 with washers." The difference is the "new" o-ring for the rubber flange. Does this mean that the o-rings at the cylinder head to intake manifold can be reused but the o-ring has to be replaced when attaching the rubber flange?

Thoughts?

Thanks