Dadar/Pathankot Express - ਤੇਰੇ ਬਿਨ ਮਰ ਜਾਣਾ

As from tomorrow onwards till 30th, 12237/38 Begampura Express will be diverted to run via Varanasi Pratapgarh Lucknow due to signal interlocking work in lucknow sultanpur section, I have my ticket booked in 3A on 29th. So,If I board the train with same ticket from lucknow,Will the ticket remain valid for onward journey ? Also, What if I board from Pratapgarh Jn ?

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