Following trains can be added

1.) 22101/02 LTT-MMR Rajya Rani Express, terminal changed to CSMT, then extended to NED and now runs as 17611/12 CSMT-NED Rajya Rani Express

2.) 22107/08 CSMT-LUR Superfast (Daily)...
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Express extended 3 days a week to Bidar. Now runs as 22107/08 CSMT-LUR S.F.(4-days)Exp and 22143/44 CSMT-BIDR S.F.(Tri-weekly)Exp

3.) 12133/34 CSMT-KAWR Special, regularized and extended to MAJN, now runs as 12133/34 CSMT-MAJN Superfast Express

4.) 17617/18 Mumbai-Manmad Tapovan Express later extended to Nanded and now runs as 17617/18 CSMT-NED Tapovan Express

5.) 11029/30 CSMT-MRJ Koyna Express Express extended to Kolhapur and now runs as 11029/30 CSMT-KOP Koyna Express

6.) 11305/06 CSMT-SUR Express upgraded to S.F as 22139/40 CSMT-SUR S.F., then extended to Gadag and downgraded to Mail/Exp and now runs as 11139/40 CSMT-Gadag Express

7.) 12071/72 DR-AWB Jan Shatabdi Extended to Jalna and terminal changed to CSMT, now runs as 12071/72 CSMT-J Jan Shatabdi Express

8.) 11025/26 PUNE-NK Express (via Panvel) first extended to Manmad and then to Bhusaval, now runs as 11025/26 PUNE-BSL Express (via Panvel)

9.) 11401/02 CSMT-NED Nandigram Express extended to Nagpur, then short-terminated at Kinwat but now runs as 11401/02 CSMT-Adilabad Nandigram Express

10.) 11205/06 LTT-NZB Express extended to Karimnagar and now runs 11205/06 LTT-Karimnagar Express

SCR:

1. 17239/40 Simhadri Express runs between VSKP & RJY now runs upto GNT.

2. 17243/44 runs as BZA-VZM Passenger later extended to Rayagada now runs as GNT-RGDA Express.
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3. 12755/56 Bhavnagar Express runs as BZA-LTT Express later extended & runs as Kakinada - Bhavnagar Express & converted to SF.

4. 17479/80 TPTY PURI Express is a old train of HWH - TPTY Janata Express.

5. 12791/92 is a old train of TPTY-SC-Varanasi Express now runs as a SC-Danapur SF.

6. 17017/18 or 22717/18 runs as HYB-ADI Express & later extended upto Rajkot & runs as SC-RJT Express.

7. In olden days Kakatiya Express runs between Warangal-HYB as a Day train, later converted as a SC Manuguru F.Passenger.

8. 17025/26 or 12745/46 runs a slip coaches Attached/Detached to SC-MTM express later runs a Tri-Weekly Independent Rake now converted to daily.

9. 12709/10 runs as a ONT between SC-BZA later extended upto Gudur & rename to Simhapuri Express.


SER:

1. 20889/90 HWH - BZA Humsafar Express Extension upto TPTY.

2. 18045/46 HWH - BZA East Coast Express extended upto GNT, later cancel to GNT & Extended upto HYB via Kazipet.


SR:

1. 12077/78 MAS- BZA Jan Shatabdi Express runs between Egmore & BZA later terminal changes to MAS.


EcoR:

1. 12861/62 VSKP KCG SF Express runs a link train between VSKP-KZJ-NZM.

2. 58525/26 VSKP Palasa Passenger extended upto Brahmapur.

3. 20811/12 VSKP - NED SF Express is a Extension of VSKP - Nizamabad Special Express.

Please correct the info you're providing:
1. Deekshabhoomi never terminated at pune. Extension on both the sides was done in the same rb probably during rm lalu yadav.
2. Don't know if vindhyachal got created upon merging of two trains, but earlier it was bina et vindhyachal express. The extension to bpl is quite recent.
3. Pawan was extended three days to...
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dbg and four to mfp. Then made daily to dbg and finally to jyg.
4. Shaktipunj used to run till sgrl. Are you sure about cpu?
5. Multiple entries of hirakund and chhattisgarh exist
6. Please check the rake zones for all once
7. Are you sure ju puri used to run till durg? I believe the terminal was puri only on one side.
8. Wasn't upsk also introduced till mkp only?
9. Patalkot was introduced initially between cwa and jhs. Then for few days in a week it was extended to gwl. Finally both jhs and gwl portions were extended to dee, and later merged with dee fzr ice to form fzr cwa. It was never extended to fzr.
10. You sure ranthambhore used to run till kota. Wasn't the extension done from swm straight to indb?
11. Udz gwl got created upon merger of two trains too. Kindly confirm this with the locals.
12. Ispat has further been extended to kbg
13. Basava was extended to bgk from BJP
14. Krba tvc is krba kcvl now
15. Sjsa was probably introduced as aii koaa. It probably never terminated at bpl/ rtm.
Btw I am shocked to know the history of kushinagar. Overall, this list compiles a very small percentage of extensions in IR 😅