While on the Eager Engineer quest for the new Children’s Week series, I arrived at the rocket drill at Gutterside Rocket Station with Threadis only to discover that there were two versions of Stelliya present. One of them still offers my regular travel choice as well as the quest-specific travel choice, while the second copy appears to have a choice that should only be available if I didn’t yet have Undermine unlocked.
I took a screenshot just to better illustrate. The Stelliya on the left is the “fake” who offers me the never-visited option.
https://imgur.com/a/R5siCyn