My experience is that while a grossly finish can be repaired and then buffer back out, satin and Matt finishes are almost impossible to spot-fix. Gloss is gloss and is achieved by polishing, which lends itself better to filling above what is needed to fill the scratch and then cutting back to level and buffing the whole area to match it. Satin and Matt covers a whole range of unglossiness and are an unbuffed finish which means any fill can't be cut back to the right level without affecting the texture of finish you've just laid.
Your best bet it to chalk it up to experience and forget about it. Think of it as being personalised.
The first scratch is the most painful. When you inevitably bang it on the corner or a table and put a dent in the front you'll forget all about the scratch on the back
