Thibaut Milville

Hi all First time i post on the forum, but here i have a big problem. step 1 : model imported from scan, voxelisation : ok step 2 : retopo, uv mapping, and scene merged with micro vertex : ok step 3 : paint room, low poly with normal and ambient occlusion : ok step 4 : export lowpoly model and normal map : it seems to be ok step 5 : import the loxpoly and normal map into 3ds max : KO big seams on the model and ugly render. I have to render my models for tomorrow and I doin't know what i am doing wrong. Could please help me. Thanks