Current FLDAS approach is to use a land cover dataset that conforms with the LSM's default vegetation classification scheme. No more re-mapping is applied. The model's default vegetation parameter table is directly used in the FLDAS simulation. The FLDAS/Noah LSM uses the modified IGBP 20-category, which includes 16 IGBP vegetation classes plus 3 classes of Tundra.
The vegetation parameter table for Noah v3.3 is available and described at the official Noah model website at NCAR Research Applications Laboratory (RAL). The table (http://www.ral.ucar.edu/research/land/technology/lsm/noahlsm-v3.3/VEGPARM.TBL) contains three set of parameters for the different classification schemes. Refer to the second set, "MODIFIED_IGBP_MODIS_NOAH" section.