I agree entirely that in general terms there is no was of proving how a particular area of damage may have occurred to a particular blade, and this situation will never change.
I also agree that..."this is just another way of saying "It has edge nicks", and in reality these could just as likely have been caused by children playing with old swords found in attics, amateur fencing practice or even during film work or theatrical performances (many old swords have found their way into local amateur dramatics or other entertainment troupes"...
However, it is certainly the case that some Indian Army service swords (or say swords used in service in India) show evidence of sharpening and re-sharpening.
Question/opinion on your paragraph 7) "Shows Sings of Actual Combat Experience!"
Much has been written on the subject of the Indo Persian style of combat with a sword whereby the cutting stroke was employed with devastating effect on the recipient (arms, legs, head, body etc.).
Taking into account the fact that the thrust proved quite successful against an opponent who practised the cut moreoften, and did not necessarily expect the thrust, do you consider that edge damage of a sharpened blade, was likely to occur during a melee?, or never occurred because British sword practise was refined to a point that such things never happened.