I had a look and it does seem to be missing, so I've no idea if it is by accident or of IMSI have abandoned the certification (training material is still available).
Here is a link to the South Africa site which shows what it should look like. TriCad training
, click the button TurboCAD Deluxe 2D/3D. However, even that site is not complete, because if one clicks the button 'more product information', it goes to the normal (I assume uncertified) 2D/3D training which is available from IMSI here.
I guess you would have to contact support