2002 BMW X5 driver seat adjustment

For 2002 BMW X5 I try to do adjustment driver seat as description in Manual operation. However, evere time if open door with remote key, seat self move different position and I need again to do adjustment. Same time position as need save. 1 of 3 button memory seat work if push and hold button. I guess exist progression what need to do for right operation seat adjustment. However, it maybe car computer problem.