Look I have attached my tickets (I keep all my tickets in one pouch, that's why it was not difficult to search 2014 ticket).
Pic 1: is from Lucknow to Jaipur which was late and I missed my train for Gujarat, so in first ticket Station master stamped about the info that I had a good buffer and the connecting train was late, in other words he approved my demand.
Pic 2: is from Jaipur to Gandhinagar, Gujarat in which Head TTE of Jaipur stamped "Allowed to travel in next train" and alloted...
more... seat in Aravali express in B1.
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So I don't think you will face any problem.
I have my own experience that's why I'm telling you as one of the option.