Yes, there is a chance that an aggressive defense attorney could always say that testimony has been enhanced by suggestion and then dismiss recall that was truly okay (thus hurting your client). You must BE CERTAIN that all testimony material is deposed prior to using hypnosis for therapy. That will insure that the testimony stands firm. If there have not been depositions taken, do not endanger the client's case. Treat them without hypnosis until after the legalities are out of court. (No, there is basically no likelihood that the method I teach on that topic will add confabulation. But that won't prevent an attorney from saying otherwise and raising doubt).