Sound to Samples import window parameter values do not save to project .blend file

Every time I close and reopen a project then the option Sound to Samples (Graph Editor > Channel > Sound to Samples) import window's parameter values get reset. If you do important something as Sound to Samples and then reopen the Sound to Samples import window then the parameters values ARE saved from the last time the import window was opened. The values only reset if you close and reopen blender.