When a Magistrate talks about converting an execution/Non-Bailable Warrant (NBW) into a "permanent warrant" (often legally referred to as a Standing Warrant or an order directing proceedings under Section 82/83 of CrPC/BNSS for declaring the person a Proclaimed Offender), it indicates the court is moving the file to an unexecuted warrant / standing warrant register.
In such a circumstance when a permanent warrant is issued, the Magistrate sine-die adjourns the active hearings and sends the case file to the court's record room / standing warrant register until the police actually arrest the accused, in practical terms, police departments rarely prioritize standing warrants for cheque bounce (Section 138 NI Act) cases unless forced or incentivized. Once the case is filed away, active dates stop getting scheduled regularly.
It slows down the case drastically. Instead of having court dates every few weeks/months where police can be summoned or reprimanded for not executing the warrant, a permanent warrant effectively pauses active trial proceedings until the accused is arrested or surrenders. As long as standard NBWs are renewed every hearing, the court retains the case on its active list and can keep demanding status reports/compliance from the local police station or the SP.
Your lawyer actually wants the Magistrate to write to the Superintendent of Police (SP) to execute the current NBW. The letter to the SP forces accountability on local police officers. But converting it into a permanent warrant stops that active pressure.
Thereforfe you may instruct your lawyer to file an application under Section 82 and Section 83 of CrPC (or corresponding provisions of BNSS). Pushing to freeze their local bank account or attach property usually forces the accused to appear immediately. Request the court to send an explicit executive order/letter to the SP of the accused's city, seeking a compliance report on the current NBW within 30 to 45 days rather than closing the file.