[My query is about PNR 2835137985 for train 12148 NZM KOP EXP]
No, you are not allowed to travel in any kind of waiting ticket. e-ticket gets automatically cancelled while counter ticket does not. However in some cases I have seen, people with counter waiting ticket gets their ticket confirmed during the journey by requesting to TTE.
TTE will charge fine for waiting e-ticket and in some cases for counter waiting ticket too.