RCM applicablilty when supply made by registered dealer.

hello, I have few queries.

Query 1:

if a registered dealer supplies notified goods(cashew nuts) described under section 9(3), to a registered recepient, then does RCM apply to the recepient? coz supply of notified goods are subject to reverse charge therefore recepient is liable to pay gst. Or forward mechanism can be opted since the seller is registered.

should the invoice of seller contain cgst sgst as with supply of normal goods or just mention taxable amount subjected to RCM?