Courageous Lion

My 2006 530XI with just under 200,000 miles started missing after it warms up. I've done some swapping of coils and that hasn't seemed to help. I'm going to replace the plugs and all six coils and see if that works. Anyone had this issue before? Some have said I may have a faulty injector, but that seems to me would be missing all the time rather then after warming up. My OBD reader won't erase the codes so that I can start over and see where the miss is at. I have an ISoft that I just can't figure out for the life of me.