If you need to make a change to your trace after proceeding to step 2 you can hit the back button. However, if you have made any changes in step 2 they will be overwritten. There is currently a small glitch with the map not initializing properly when you proceed back to step 1 which we are working on. However, if you hit the open icon on the floor you would like to edit the map will initialize properly and you should be able to edit it and proceed back to step 2.
When you start a new project the map should show the whole US. As you begin to type in the address field you should be able to select an address from the drop down list. Be sure to select from one of the drop down choices and not just continue to type an address that is not found. The program needs an exact match to be able to properly locate the address and pull the necessary data on that home.