(Duplicate post due to site issue as original post was not showing up)
CA Mayur Thakkar please login to TDS portal and check if the short demand is showing there (download the justification report).
If showing meet the Assesing Officer asking the reason for resending the notice when it was squashed. I feel it must be a mistake but better to clarify. To know the responsible AO who sent the notice, CA should help in approaching the AO and check.