I purged one, and it appeared in the list. Let me push Wikisource-bot through to see if touching the pages makes a difference, and if that doesn't then we can push a little harder.

@jayantanth I am having to push through as billinghurst as the bot doesn't have sufficient privileges to pull enough pages through the API. You may wish to put through the knWS community a request for permissions for wikisource-bot so we can do these things more easily.

Touching the files seems to be working fine. Why they are needing to be touched is unknown to me. @Phe can you address that?

@Omshivaprakash

In T188856#4021909, @Billinghurst wrote:

@jayantanth I am having to push through as billinghurst as the bot doesn't have sufficient privileges to pull enough pages through the API. You may wish to put through the knWS community a request for permissions for wikisource-bot so we can do these things more easily.
Touching the files seems to be working fine. Why they are needing to be touched is unknown to me.

Touched 6000 pages, and got to 303. Let me push a purge just for pages in that ns, and we will see if we can get the remainder.

bah humbug, it seems that touch/purge in ywikibot needs either categories or transclusion; and I don't see that knWS uses index categorisation based on proofreading :-( I will have to purge all the pages and that will take a couple of hours. I have started it, though will have to look at it tomorrow to judge success.

@Billinghurst: Was this successful?

I never looked at it. :-( @jayantanth ?

Nope, it's still the same. :(

https://kn.wikisource.org/w/index.php?title=special:IndexPages&limit=500&offset=0&key=&order= shows 307 results.
https://kn.wikisource.org/wiki/ವಿಕಿಸೋರ್ಸ್:ಪರಿವಿಡಿ_ಪುಟಗಳು still shows 319 results.

Is there an easy way to compare these two lists and find out which ones are missing? :-/

At present there are the following, stripped of the "Index:" prefix, that appear in only one of the lists Andre linked to:

Chirasmarane-niranjana
Epigraphia carnatica - Volume II.djvu
Epigraphia Carnatica - Volume IX.djvu
Epigraphia of Carnatica Volume IX.pdf
Ghuntigalalli.pdf
Kaanuuru-Subbamma Heggadati
Kaanuuru-Subbamma Heggadati.pdf
Kannada Naaladi.djvu
Karnataka Janapada Kathegalu.pdf
Kavirajamaargam Preliminary Pages.pdf
Naddedade dari.pdf
Nadedhadhe daari.pdf
Putina Samagra Prabandhagalu Preliminary Pages.pdf
Shataka Samputa Priliminary Pages.pdf
Swami Aparampara.pdf
Vyshakha Priliminary pagespdf.pdf
YASHODARA CHARITE Prelim pages.pdf
ಕಾನೂರು ಸುಬ್ಬಮ್ಮ ಹೆಗ್ಗಡಿತಿ
ಯಶೋಧರ ಚರಿತೆ
ಸಾಮಾನ್ಯ ಶಸ್ತ್ರ ವೈದ್ಯದ ಕಾಯಿಲೆಗಳು.pdf

Some of these index pages are redirects, while some appear broken, however, and appear to duplicate other index pages. Someone ought to check on those.