Reissue of invoice under gst law

Hi,

Would request you all, please help to reach out to correct compliance, details below:-

Client rejected the invoice issued in the month of Dec., 2018 & asking for fresh invoice with current date (Apr., 19).  Now need to raise CN to knock off earlier invoice.

Can we reduce Output GST Liability on this CN to knock off earlier invoice & to raise fresh invoice with April date.

Thanks & regards

Neeraj Kumar