Yes, but only if you have the original native Flash .fla file. Without it you are most likely starting over. Another consideration with Flash is the lack of support on Apple mobile devices. Unless its really necessary to keep the website and/or content in Flash we highly recommend building a new mobile responsive website. Adobe has also announced that it will be ceasing support for Flash in the near future. If you have a website using Flash, now really is a good time for a redesign.