I currently am using Family Tree Maker 2006. I have my family tree almost complete. How do I upgrade to 2012 or 2014 and keep all the information I have already supplied?
You will have to back up the data first, and then install the new version and attempt a possible Import operation. Start the application, then go to File > Export or File > Save and save the file to FTW format. Install the latest version and then you can open the FTW file and have all the information added to the database.
Use the online FAQ to import the file into the application: http://help.ancestry.com/app/answers/detail/a_id/4363/kw/import