As @JeffSchwenk mentioned I have always created a copy of the company. Ending operations as of 11/9 in the current live company. In the new company typically we would create a JE to zero out the GL accounts to have a clean slate or bring in beginning balances. The client would record the purchase. They would keep the old companies as archive and have the old companies so they have an ending balance sheet as of 11/9/2018. A bunch of other moving parts... forms, security... not a small project... definitely getting your Christmas bonus.