Can you configure the system to carry the Default Location from an Opportunity through to the Project Address on a Project?

Hi @cwalton3   Here is the customization code. Please add this to package package and deploy. 

Hope this helps!!

 public class ProjectEntryExt : PXGraphExtension<ProjectEntry>
    {

 protected virtual void _(Events.FieldUpdated<PMProject, PMProject.locationID> e, PXFieldUpdated InvokeBaseHandler)
        {
            InvokeBaseHandler?.Invoke(e.Cache, e.Args);

            PMProject row = e.Row as PMProject;
            if (row != null)
            {
                Address objAddress = PXSelectJoin<Address, InnerJoin<Location, On<Location.bAccountID, Equal<Address.bAccountID>,
                                     And<Location.defAddressID, Equal<Address.addressID>>>>,
                                     //Where<Address.bAccountID, Equal<Required<Address.bAccountID>>,
                                     Where<Location.locationID, Equal<Required<Location.locationID>>>>.Select(Base, /*row.CustomerID,*/ row.LocationID);
                if (objAddress != null)
                {
                    if (Base.Site_Address.Current != null)
                    {
                        Base.Site_Address.Current.AddressLine1 = objAddress.AddressLine1;
                        Base.Site_Address.Current.AddressLine2 = objAddress.AddressLine2;
                        Base.Site_Address.Current.City = objAddress.City;
                        Base.Site_Address.Current.State = objAddress.State;
                        Base.Site_Address.Current.CountryID = objAddress.CountryID;
                        Base.Site_Address.Current.PostalCode = objAddress.PostalCode;
                    }
                }
            }
        }
		}