making a list of Durontos that were Cancelled Permanently/Extended/Short Terminated/, if anyone knows more durontos, kindly put them in the replies and ill update it

1)12259 Sealdah New Delhi AC Duronto Express
Extended to Bikaner On 24th February 2020
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2) 12239 Mumbai Central Jaipur AC Duronto Express
Extended to Hisar on 17th August 2021

3) 22205 Chennai Central - Madurai AC Duronto Express
Permanently Cancelled from 08th June 2020
and Replaced with 20601/02 Chennai Madurai AC Express

4) 12267 Mumbai Central - Ahmedabad AC Duronto Express
First Extended to Rajkot on 27th May 2018
Later Extended to Hapa on ????

5) 12275 Allahabad - New Delhi Duronto Express
Later Converted to
Prayagraj - New Delhi Humsafar Express on 14th September 2019

6)12243 Chennai Central - Coimbatore Duronto Express
Converted to Shatabdi Express on 22 November 2013

7) 12847 Howrah - Digha AC Duronto Express
Converted into Shatabdi on February on ???
later converted into Super AC on 1 December 2015.
(Note: Currently Stands Cancelled.)

Former Shatabdi Express trains:
Note: Some stoppages may be missed. Some important non-stopping stations might not be always non-stopping and some stoppages might not be always stoppages.
2025/2026 Bangalore city Hubli during 1995-96 with halt at Arsikere. Announcement may be in Rail Budget 1995 online.
New Delhi - Kathgodam in 1995 and/or1996 was most probably existed as it was in fare structure of...
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TRAINS AT A GLANCE 1996 but not in table and most probably fare table was before time table session. (present one was introduced after a long time of withdrawing).
203x/203x (x=?) Secunderabad Rajhmundry (during 1999) with halts at Vijayawada, Eluru and used to skip Warangal.
2023/2024 Chennai central Coimbatore during 1995-2000) with halts at Salem, Erode, Tiruppur and used to skip Katpadi, Jolerpettai. Its announcement may be in Rail Budget 1995 online.. (present one was introduced after a long time of withdrawing with Duronto service pattern and later service pattern was changed to Shatabdi). Maybe according to a web link maybe of The Hindu: Jul 1, 2000 - The General Manager said the Chennai-Coimbatore Inter- City Express would replacethe Coimbatore Shatabdi Express
New Delhi Bhatinda. (in 2002). Maybe according to a web link maybe of hindustan times: Amid suspense over train route, … Oct 28, 2014 - In 2002, the Delhi-bound Shatabdi express was flagged off... It had five stops at Barnala, Dhuri, Patiala, Rajpura and Ambala during its to and fro journey.
New Delhi Breilly during 2002 and/or 2003. Maybe as per Outlook web link: Introduced and Cancelled: Dec 8, 2018 - The New Delhi-Bareilly Shatabdi had only a short life of a few months, …
2021/2022 Howrah Rourkela, (between Howrah and Rourkela during 1995-2002, between Howrah and Tatanagar during 2002-03 with halts at Kharagpur, Tatanagar, Chakradharpur (Chakradharpur was before making the route shorter). Its announcement may be in Rail Budget 1995 online.
Maybe according to a web link maybe of The Telegraph: Green nod to new Jan Shatabdi destination - Telegraph India May 8, 2003 - The South Eastern Railway has decided to extend the existing Howrah-Tata Jan Shatabdi Express to Barbil from May 15. … The Shatabdi Express which was running between Howrah and Tata was withdrawn in March after the railways incurred a huge loss. The Jan Shatabdi Express was instead introduced from March 2.
CAG website (maybe) Review on Passenger Revenue Management in Indian Railways: Train Nos.2021/ 2022 which was earlier running as Shatabdi Express between Howrah -Rourkela was converted to run as Jan Shatabdi Express from 2 March 2003 between Howrah - Tata. With a view to improve the occupancy of the train, its run was extended up to Barbil with effect from 15 May 2003
2023/2024 Howrah Patna (2001-2003) with halts at Durgapur, Asansol, Madhupur, Jasidih, Lakshisarai, Mokama (At first no halt at Durgapur, Madhupur) and used to skip Bardhaman, Raniganj. Maybe according to a weblink maybe of: THE TIMES OF INDIA Patna-Howrah Shatabdi may be replaced by Janshatabdi Jan 30, 2003 DANAPUR: The Patna-Howrah Shatabdi Express, launched with launched with much fanfare by railway minister Nitish Kumar barely 14 months ago, is likely to be replaced by a Janshatabdi Express in the next financial year.
Maybe according to a web link maybe of THE HINDU: Thursday, Oct 02, 2003 A Shatabdi service grinds to a halt PATNA OCT.1. The 2023 and 2024 pair of Shatabdi Express between Howrah and Patna is, perhaps, the only one of this super category chain of trains to have been withdrawn after a two-year run.
2027/2028 Mumbai CST Pune (1995-2004) with halts at Dadar, Lonavala (at first no commercial halt) and used to skip Kalyan. Maybe according to a web link maybe of TIMES OF INDIA Good news for Shatabdi commuters Mar 4, 2004 - PUNE: Commuters have welcomed the Central Railway (CR) decision to introduce the Mumbai-Pune superfast intercity express in place of the Mumbai-Pune Shatabdi express. Started in 1995,
12035/12036 Jaipur - Agra Fort (2012-2018) with halts at Gandhi Nagar Jaipur (at first no halt at Gandhi Nagar Jaipur), Bharatpur. Maybe according to a web link maybe of Press Information Mumbai (Govt link? Nov 21, 2012 - The new trains will be flagged off from respective railway stations within next ... 12035/12036 Jaipur-Agra Shatabdi Express (6 days a week). Maybe according to a web link maybe of hindustan times Apr 13, 2018 - The Jaipur-Agra Fort-Jaipur Shatabdi Express will be replaced by a new train Ajmer-Agra Fort-Ajmer Superfast Express from May 1.
Chennai central - Tirupati was in time table 1999 but most probably was not introduced. Its announcement may be in Rail Budget 1998 online.