Hi
Forgot to say, welcome to Rootschat!
I would say that the survival of those sort of court records regarding maintenance claims may be somewhat patchy.
You could try a search on The Keep
http://www.thekeep.info/Those East Sussex record descriptions on The Keep can usually be found on TNA website as well.
Could there have been another local newspaper with a more detailed report?
Of course we don't know why the court didn't grant an order against Arthur. It's a pity that his army records appear not to have survived (unless he served past 1920 perhaps)
Still, we have progress of a sort!
John