"Filing paperwork" refers to the act of organizing and storing documents or forms in a systematic way, typically in folders or filing cabinets. Full definition
If, during the suspension period, you and your spouse decide to stay married, you must then file paperwork with the court requesting that it dismiss the pending divorce. (info.legalzoom.com)
For example, costs of filing paperwork for permits is a start - up expense. (money.stackexchange.com)
You will be responsible for filing your paperwork in the correct location, which you can locate here. (divorcenet.com)