Reply to Discontinued Threads?

In the case of:

https://portableapps.com/node/175

...being continued on:

https://portableapps.com/node/6092

...how does one reply to someone on the discontinued thread (e.g. thread 175)?

In case someone thinks, "um, what the hell would you do that for?"

I wanted to reply to:

https://portableapps.com/node/175#comment-16852

The first link that, the author (otbsupport) posts (http://www.robloach.net/projects/portableskype) is invalid (404), so I was going to reply with this link:

http://www.robloach.net/project/portableapplications

...which is the new, correct link that leads to a Portable Skype by Rob Loach.

Basically, I thought copying the entire post of the author in question, adding my reply to it and posting it, whether as a new comment, or in reply to someone other than the author, would not be appreciated.

Thanks.