Result from Write Model different from Kernel Model?

hi,

I want to store my SVM Model, when I do "store Kernel Model" it seems to be a different result in the model than when I do write Model. In the last case, I get a big ".mod" file, whereas in s tore Kernel Model, I get an IOO or ".md" object...?

for the correct model, do I always have to do "write Model" ??