In links tab, I have about 19.000 offline links. Most of them are from 4 years ago and they are mixed with the new ones. I only want to replace the new threads, not the old. If we can sort the links by date, we can replace easier and faster. It is possible?

How should I know if link is old or new?

That's not really possible I think.

Maybe by date of the post. Each editable post contains a title and a date which was posted.

Normal:


Edited:

The links might be uploaded 3 months ago and just posted recently.

But I'm not talking about links but of post date. Themamanager it could show the date of posts and I will know if that link was from 3 years ago or newer, regardless if link was uploaded 3 or 4 months ago.

In "LINKS" tab only links are shown (not posts).

Also some forums might not have date of posts.
It also can be different format between different forums (2015-12-05 and 2015-05-12 [same date], etc, there are a lot of formats, some might even write only 4 months ago, etc.) and position depending on the style (HTML) the forum uses usually is different and unique to each forum.

It would be quite difficult to add that date to posts and support all forums / blogs.

Edit: if you don't care about old posts, in "POSTS" tab, select that website, posts are are sorted by latest at the top by default.

Just delete the older ones which you don't need. By doing that program obviously won't check them and won't display those older dead links.