PMDG GS problem

Hello,I discovered that after I upgrade the PMDG 747-400 by the Universal Update Package, when I approaching the ILS runway I found something strange...... Did the PMDG 747-400 can recognize the rwyway is ILS CATII or CATIII ?? Because I have tried 3 different rwys and all of them are CATII ...... when I reach around 200ft near the minimum DH, I heard the sound "Guide Slope....Guide Slope" Actually this does not affect my landing because I turn off the autoland before the DH, but how about when I land on a CATIII rwy ? Is this only a bug ? Just a fake guide slope warning sound ? Will the plane still can auto touch down ?Jacky Yeung