Custom and practice in the legal field is to give new counsel documentaiton already filed and served with the court and others when requested. You are not obligated to comply with the request but doing so would be a good idea for future dealings with the other attorney.The other attorney can get the document from the court 's file if need be.You can ask for the other party's financial statement in conjunction with your petition. The other side is required to serve you with a copy of all filed documents with the court concerning your matter.