OK, so got a pet house mod but don't like the 'fake' food bowl attached, extracted the hlod and removed then went to reimport and got an error about it can't upload due to swiffle information on the mlod which I never touched but I assume it has to do with the main mesh which is Group, 1 the 1 I edited, with the same number of vertices and faces. What exactly is swiffleinformation and what do I do now to fix it?

EDIT
I used an old version of TSRW and had no problem importing.

What version did you use and where did you get it? and could i have it as well? Been updating old cc and i get this same Import failed. Couldn't update swiffleinformation for mlodentry error on everything.
Sims studio 4 can only use blender and well... blender is way complex to use to do things to objects that I can do in seconds in milkshape and it flickers endlessly.