How do you know this???? Does it say that on the wiki?
The info was on the page long before they got their trusted sources, when the only sources were either program guides at
The CTW Archives or having the actual episodes themselves.
I recall seeing somebody mention that Telly was mentioned in that guide, I looked on the page after they compiled a guide from their script, then looked in history for past edits.
There’s a sandbox page on “script inconsistencies” which notes segments mentioned in the program guides that either don’t appear in the final aired version script or the final edit of the episode (and Vice versa), I saw that there is a lot more changes than I would have expected (including some that I was really curious about, so some mysteries remain). I saw in some scans of the season 11 program guides a note that says the episodes are completed before the guides are printed.
as far as I know, the wiki administrators were only given one draft of each script, usually the one marked “final aired version”, though there are a few cases where it clearly wasn’t (and I think they have since acquired the finished copies of each of those episodes).